///////////////////////////////////////////////////////////////////////////////////////////////////////////// // // ALTTXT V1.2 // BY: BRIAN GOSSELIN OF SCRIPTASYLUM.COM // ADDED FADING EFFECT FOR IE4+ AND NS6+ ONLY AND OPTIMIZED THE CODE A BIT. // SCRIPT FEATURED ON DYNAMIC DRIVE (http://www.dynamicdrive.com) var dofade=true; // ENABLES FADE-IN EFFECT FOR IE4+ AND NS6 ONLY var center=true; // CENTERS THE BOX UNER THE MOUSE, OTHERWISE DISPLAYS BOX TO THE RIGHT OF THE MOUSE var centertext=false; // CENTERS THE TEXT INSIDE THE BOX. YOU CAN'T SIMPLY DO THIS VIA STYLE BECAUSE OF NS4. // OTHERWISE, TEXT IS LEFT-JUSTIFIED. //GLOSSARY var gpath= "../shape/images/glossary/" var acute = "An angle less than 90 degrees." var alternate = "" var angleofel = "The angle between a line and the horizontal." var arrowhead = "" var arc = "" var bearing = "The angle of a line measured clockwise from north." var bisector = "A line that bisects an angle or bisects a line segment." var circle = "" var circumcircle = "A circle with an inscribed triangle" var circumf = "The perimeter of a circle." var concave = "" var concentric = "" var cone = "" var convex = "A polygon with all interior angles less that 180 degrees. " var corresponding = "" var cube = "" var cuboid = "A rectangular prism." var chord = "A straight line joining two points on a curve." var curved = "" var cylinder = "A prism with circular cross-section." var diagonal = "" var diameter = "" var dice = "" var edge = "" var ellipse = "" var enlargement = "" var equidist = "" var equilateral = "Having all sides of equal length. " var extangle = "" var face = "" var hexagon = "A polygon with 6 sides. " var horizontal = "" var incircle = "An inscribed circle" var incentre = "The centre of an inscribed circle" var intangle = "" var intersect = "The point on a graph where two lines cross. " var identical = "" var isosceles = "A triangle with two sides of equal length. " var heptagon = "A polygon with 7 sides. " var kite = "" var line = "" var midpoint = "" var net = "A plane shape that can be folded to make a solid shape." var obtuse = "" var octagon = "A polygon with 8 sides. " var parallel = "Having the same gradient." var parallelogram = "A quadrilateral with opposite sides parallel." var pentagon = "A polygon with 5 sides. " var perpendicular = "One line being at right angles to another." var polygon = "A shape with straight sides." var pyramid = "" var pythagoras = "a²=b²+c²" var prism = "A solid shape with constant cross-section." var quadrilateral = "A polygon with 4 sides." var radius = "" var rectangle = "" var reflection = "" var reflex = "An angle that is bigger than 180 degrees." var regular = "Having all sides equal and all angles equal. " var rhombus = "All four sides equal; opposite sides parallel." var rightangle = "90 degrees." var rotation = "" var sector = "" var segment = "" var semic = "" var side = "" var square = "" var scalene = "A triangle with all sides of different length." var sphere = "" var straight = "The type of line produced by a linear equation." var star = "" var tangent = "1. The trigonometrical function defined as opposite/adjacent in a right-angled triangle.
2. A straight line that touches a curve at one point.
" var triangle = "" var trapezium = "A quadrilateral with one pair of parallel sides." var vertical = "" var vertically = "" var vertex = "The corners of a polygon." var absolute = "The modulus, |x|; the number without the sign." var adjacent = "Next to; two sides of a polygon with a vertex in common." var acceptance = "Statistics
The range that the test statistic must fall into for the null hypothesis not to be rejected." var alternative = "Statistics
H1; The hypothesis that is accepted if the null hypothesis is rejected." var amplitude = "The maximum displacement from the x axis in either the positive or negative direction." var arccos = "The inverse of the cosine, sine and tan functions." var argand = "A geometrical presentation of a complex number; using a real and imaginary axis to plot a+ib as (a,b)." var argument = "On an argand diagram the angle between the complex number and the real axis." var arithmetic = "The mean of a set of numbers." var arithmeticp = "A sequence of numbers, where each term is obtained by adding a constant to the previous term." var associative = "An operation * is associative if
a * (b * c) = (a * b) * c." var asymptote = "A line to which a given curve gets closer and closer." var axis = "One of two straights line on a graph from which measurements are taken. One axis (the y axis) is vertical; the other (the x axis)is horizontal." var bias = "Statistics
Anything that prevents a sample from representing the population." var binomial = "Statistics
A statistical situation where there are only two mutually exclusive outcomes, whose probabilities of occurring are constant." var binomiale = "The expansion of expressions of the form (a+b)n." var bivariate = "Statistics
A distribution involving two variables, for example weight and height." var box = "Statistics
A statistical diagram used to illustrate median, quartiles and range." var calculus = "Concerned with differentiation (rates of change, gradient) and integration (area, summation)." var cartesian = "The rectangular coordinate system using an x and y axis and x and y coordinates, written (x,y)." var central = "Statistics
The mean of a random sample of size n from a distribution of mean m and variance v will be normally distributed with mean m and variance v/n, for large n." var centreg = "The point at which the force of gravity on a body is taken to act." var chain = "A rule for differentiating a function of a function:
dy/dx = dy/du x du/dx." var chi = "Statistics
A test for comparing observed and expected frequencies." var circular = "The use of radians to measure angles." var cluster = "Statistics
The members of the sample form a natural group or cluster." var collinear = "A set of points lying in a straight line." var commutative = "An operation * is commutative if
a * b = b * a." var completesq = "The process of converting ax²+bx+c to the form (x+d)²+e." var complex = "A number of the form a+bi where i is the square root of -1, and a and b are real." var confidence = "Statistics
An interval within which an unknown parameter of a distribution is expected to lie, with a given degree of confidence." var conjugate = "The conjugate of the complex number a+bi is a-bi." var consecutive = "Following on immediately from the term before." var coordinate = "One of the measurements of distance of a point from the axes of the graph." var constant = "A value in a formula or equation that cannot change." var coefficient = "The constant value in an expression, for example in 3x the coefficient of x is 3." var conic = "One of the family of curves that include circle, parabola, ellipse and hyperbola." var correlation = "Statistics
The degree of relationship between two random variables, in the range
-1 to 1." var cosecant = "The reciprocal of sine:
cosec x = 1/sin x." var cosine = "The trigonometrical function defined as adjacent/hypotenuse in a right-angled triangle." var cosiner = "a²=b²+c²-2bccosA." var cotangent = "The reciprocal of tangent:
cot x = 1/tan x." var countere = "An example that contradicts a suggested rule." var critical = "Statistics
In a statistical test, if the test statistic lies in the critical region then the null hypothesis is rejected and the alternative hypothesis is accepted." var cuben = "A number that is the cube of another integer; a number in the sequence 1, 8, 27, 64,..." var cuberoot = "The number that, when cubed, equals the number given." var cubic = "A mathematical expression of the 3rd degree; having a x³ term but no higher one." var cumulative = "Statistics
A graph for displaying cumulative frequencies and for finding the median and quartiles." var cyclic = "A quadrilateral whose vertices lie on a circle." var definite = "Calculus
An integral that has to be evaluated between limits." var dof = "Statistics
The number of free choices when choosing a set of numbers." var denominator = "The number on the bottom of a fraction" var derivative = "Calculus
Rate of change, dy/dx, f'(x)." var descriptive = "Statistics
Concerned with techniques for collecting, grouping, summarising and presenting data." var diffeq = "Calculus
An equation containing an independent variable, dependent variable and derivatives of the dependent variable with respect to the independent variable." var differentiation = "Calculus
The process of finding a derivative." var discontinuity = "A break in a curve; a point at which a curve is undefined." var discriminant = "The function b²-4ac, where a, b and c are from ax²+bx+c=0." var dot = "For vectors a and b, a.b=|a||b|cos C, where C is the angle between the directions of the vectors." var doubled = "The trigonometrical formulae for
sin 2x, cos 2x and tan 2x." var exponent = "The power or index of a number; for example in x³, the exponent is 3." var equation = "A statement that two mathematical expressions are equal." var even = "A function f(x) is even if f(x) = f(-x) for all x in the domain of f. The y axis will be a line of symmetry." var expectation = "Statistics
A random variable X has expectation E(X), where E(X) = sum of all values of x.P(X=x)." var exponential = "A function having variables as exponents." var extrapolation = "Statistics
When the values of a function are known for a range of values, the use of this function to find values outside that range is known as extrapolation." var factorisation = "The process of expressing a term as a product of factors." var factor = "An integer or other term that divides into another exactly." var factort = "If f(a)=0 then (x-a) is a factor of f(x)." var factorial = "n! = n(n-1)(n-2)(n-3)...3.2.1." var fraction = "A ratio of two numbers or polynomials." var frequency = "The rate of repetition of a periodic function." var func = "A rule that connects one value with another." var geometric = "A sequence where each term is obtained by multiplying the previous one by a constant." var goodness = "Statistics
How well observed data fits to a hypothesised distribution." var gradient = "The slope of a line; the angle of its inclination to the horizontal." var graph = "A diagram showing a relationship between two variables.
The diagram shows a vertical y axis and a horizontal x axis." var greater = "Greater than: > ." var hcf = "HCF. Of two numbers: the largest number that divides into both exactly." var histogram = "Statistics
A diagram for displaying frequencies of a distribution, where area represents frequency." var hypothesis = "Statistics
An assumption about the value of a parameter of a distribution." var imaginary = "A number of the form ai where a is real and i is the square root of -1." var implicit = "An equation with no variable expressly given in terms of the rest." var independent = "Two events are independent if the occurrence of one has no effect on the occurrence of the other." var inferential = "Statistics
Concerned with techniques for reaching a conclusion on a population when only a sample is available." var integration = "Calculus
The reverse process to differentiation." var interquartile = "Statistics
A measure of dispersion; the difference between the upper and lower quartiles." var intersection = "The point on a graph where two lines cross." var intercept = "The point on a graph where a line crosses one of the axes." var integer = "A positive or negative whole number." var irregular = "Not regular; having some sides or angles different to others." var irrational = "Not rational; cannot be written as a rational number or fraction." var lcm = "LCM. Of two numbers: the lowest number they both divide into exactly." var less = "Less than: < ." var linear = "A linear line is straight, not curved. A linear equation is of the first degree, for example y = 2x+1." var locus = "A set of points that fit a given rule." var logarithm = "If y = ax then the logarithm to base a of y is x." var maximum = "The largest value possible within a specific range, the gradient is zero and changes from positive to negative." var mean = "A measure of average; the value found by dividing the total by the number of occurances." var median = "A measure of average; the middle value of a set of values arranged in order of size." var minimum = "The smallest value possible within a specific range, the gradient is zero and changes from negative to positive." var measured = "Statistics
A measure of spread such as range, interquartile range, standard deviation, variance." var measurel = "Statistics
A measure of average or 'typical value' such as mean, median, mode." var mode = "A measure of average; the value occurring most often." var modulus = "Absolute value, |x|." var mutual = "Two events are mutually exclusive if they cannot occur simultaneously." var natural = "The counting numbers 1, 2, 3..." var normal = "A line passing through a curve at a point that is perpendicular to the tangent to the curve at that same point." var numerator = "The number on the top of a fraction" var nullh = "Statistics
H0; a statistical statement that can be tested in some way" var odd = "The function f(x) is odd if
f(x) = -f(-x); the curve has rotational symmetry about the origin" var origin = "The point from where all measurements of coordinates are made; usually the point where the two axes of a graph cross." var outlier = "Statistics
An unusually large or small observation in a set of data." var quadrant = "One of the four equal areas that the axes divide the graph space into." var quadratic = "A mathematical expression of the 2nd degree; having a x² term but no higher one." var parametric = "A curve y=f(x) can be defined also by the pair of parametric equations x=u(t) and y=v(t) where t is the parameter." var periodic = "A function that repeats the same values over and over again." var pie = "Statistics
A statistical diagram used to illustrate a simple frequency distribution." var plot = "To mark a point on a graph accurately by using its coordinates." var polynomial = "An expression which has whole-numbered powers of the variable, x, multiplied by coefficients, and added together.
Examples: y = 2x, y = 1+x², y = 3-2x+7x³" var pointofinf = "A point on a curve where the tangent at that point crosses the curve." var poisson = "Statistics
A distribution used to estimate probabilities of random events which have a small probability of occuring, for example volcanic eruptions, accident rates." var product = "The result of multiplying terms together." var radian = "A measure of angle; one radian is the size of the angle subtended at the centre of a circle of radius r by an arc of length r." var randoms = "Statistics
Each member of the population has an equal chance of being selected." var range = "A measure of spread; the difference between the largest and smallest values." var rationalise = "To remove square roots, or surds, from an expression." var reciprocal = "The number produced by dividing 1 by a specified number; the reciprocal of x is 1/x" var regression = "Statistics
A statistical model, whereby the expected value of a variable y is expressed in terms of known values of x." var remainder = "If a polynomial f(x) is divided by (x-a) then the remainder is f(a)." var rule = "A method for connecting one value with another." var prime = "A number with only two factors: itself and 1." var quota = "Statistics
A set number of respondents is needed for each category and can be found in any convenient way." var quotient = "Calculus
The rule for differentiating quotients." var sample = "Statistics
A collection of sampling units drawn from a sampling frame." var samplingf = "Statistics
A list of sampling units used to represent a population." var samplingd = "Statistics
If a large number of equally sized random samples are taken from a distribution, then a statistic calculated from all the samples (the mean, for example) will form a sampling distribution." var samplingu = "Statistics
An individual member of a population." var scalef = "Of two similar shapes, the ratio of corresponding sides." var secant = "The reciprocal of cosine:
sec x = 1/cox x." var similar = "Exactly the same shape, but possibly different size." var sine = "The trigonometrical function defined as opposite/hypotenuse in a right-angled triangle." var siner = "a/sinA = b/sinB = c/sinC." var skewness = "Statistics
The symmetry in the shape of a distribution." var slope = "The angle between a straight line and the horizontal." var solve = "To find the answer or solution to a problem." var solution = "The answer to a problem." var squaren = "A number that is the square of another integer; a number in the sequence 1, 4, 9, 16,..." var squareroot = "The number that, when squared, equals the number given." var standard = "Statistics
The square root of the variance; a measure of dispersion." var standarde = "Statistics
The standard deviation of the distribution of means around their mean." var standardf = "Scientific notation; standard index form; a number expressed in the form
a x 10n, where a is between 1 and 10 and n is an integer." var statisticale = "Statistics
A process used for collecting data to provide evidence for or against a hypothesis." var statisticalm = "Statistics
A statistical process to describe or make predictions about the expected bahaviour of a real-world problem." var stem = "Statistics
A diagram for showing simple frequencies." var stratified = "Statistics
The population is divided into distinct strata and a sample taken randomly from each stratum. The size of the sample is proportional to the size of that stratum in the population." var surd = "A number containing one or more irrational square roots." var systematic = "Statistics
For example, in taking a sample of householders in a particular street, a side of the street is decided at random and then every 4th house on that side is selected." var tetrahedron= "A solid shape with four faces that are triangles." var transformation= "A change in form or shape." var translation = "A transformation of a line or shape consisting of a simple movement without change of orientation." var trapeziumr = "A numerical method for estimating the value of an integral based on dividing an area into trapeziums of equal width." var trianglen = "A number that can be represented by a triangular arrangement of dots; a number in the sequence 1, 1+2, 1+2+3, 1+2+3+4..." var trigonometry = "The study of the relationships between the angles and sides of triangles." var turning = "The point on a curve when the gradient is zero." var variable = "A value which is unknown and free to vary, often denoted by x or y." var variance = "Statistics
The square of the standard deviation; a measure of dispersion." var vector = "A mathematical object with magnitude and direction." ////////////////////////////// NO NEED TO EDIT BEYOND THIS POINT ////////////////////////////////////// var NS4 = (navigator.appName.indexOf("Netscape")>=0 && !document.getElementById)? true : false; var IE4 = (document.all && !document.getElementById)? true : false; var IE5 = (document.getElementById && document.all)? true : false; var NS6 = (document.getElementById && navigator.appName.indexOf("Netscape")>=0 )? true: false; var W3C = (document.getElementById)? true : false; var w_y, w_x, navtxt, boxheight, boxwidth; var ishover=false; var isloaded=false; var ieop=0; var op_id=0; function getwindowdims(){ w_y=(NS4||NS6)? window.innerHeight : (IE5||IE4)? document.body.clientHeight : 0; w_x=(NS4||NS6)? window.innerWidth : (IE5||IE4)? document.body.clientWidth : 0; } function getboxwidth(){ if(NS4)boxwidth=(navtxt.document.width)? navtxt.document.width : navtxt.clip.width; if(IE5||IE4)boxwidth=(navtxt.style.pixelWidth)? navtxt.style.pixelWidth : navtxt.offsetWidth; if(NS6)boxwidth=(navtxt.style.width)? parseInt(navtxt.style.width) : parseInt(navtxt.offsetWidth); } function getboxheight(){ if(NS4)boxheight=(navtxt.document.height)? navtxt.document.height : navtxt.clip.height; if(IE4||IE5)boxheight=(navtxt.style.pixelHeight)? navtxt.style.pixelHeight : navtxt.offsetHeight; if(NS6)boxheight=parseInt(navtxt.offsetHeight); } function movenavtxt(x,y){ if(NS4)navtxt.moveTo(x,y); if(W3C||IE4){ navtxt.style.left=x+'px'; navtxt.style.top=y+'px'; }} function getpagescrolly(){ if(NS4||NS6)return window.pageYOffset; if(IE5||IE4)return document.body.scrollTop; } function getpagescrollx(){ if(NS4||NS6)return window.pageXOffset; if(IE5||IE4)return document.body.scrollLeft; } function writeindiv(text){ if(NS4){ navtxt.document.open(); navtxt.document.write(text); navtxt.document.close(); } if(W3C||IE4)navtxt.innerHTML=text; } //**** END UTILITY FUNCTIONS ****// function writetxt(text){ if(isloaded){ if(text!=0){ ishover=true; if(NS4)text='
'+((centertext)?'
':'')+text+((centertext)?'
':'')+'
'; writeindiv(text); getboxheight(); if((W3C || IE4) && dofade){ ieop=0; incropacity(); }}else{ if(NS4)navtxt.visibility="hide"; if(IE4||W3C){ if(dofade)clearTimeout(op_id); navtxt.style.visibility="hidden"; } writeindiv(''); ishover=false; }}} function incropacity(){ if(ieop<=100){ ieop+=7; if(IE4 || IE5)navtxt.style.filter="alpha(opacity="+ieop+")"; if(NS6)navtxt.style.MozOpacity=ieop/100; op_id=setTimeout('incropacity()', 5); }} function moveobj(evt){ if(isloaded && ishover){ margin=(IE4||IE5)? 1 : 23; if(NS6)if(document.height+27-window.innerHeight<0)margin=15; if(NS4)if(document.height-window.innerHeight<0)margin=10; //mx=(NS4||NS6)? evt.pageX : (IE5||IE4)? event.clientX : 0; //my=(NS4||NS6)? evt.pageY : (IE5||IE4)? event.clientY : 0; if (NS4){ mx=evt.pageX my=evt.pageY } else if (NS6){ mx=evt.clientX my=evt.clientY } else if (IE5){ mx=event.clientX my=event.clientY } else if (IE4){ mx=0 my=0 } if(NS4){ mx-=getpagescrollx(); my-=getpagescrolly(); } xoff=(center)? mx-boxwidth/2 : mx+5; yoff=(my+boxheight+30-getpagescrolly()+margin>=w_y)? -15-boxheight: 30; movenavtxt( Math.min(w_x-boxwidth-margin , Math.max(2,xoff))+getpagescrollx() , my+yoff+getpagescrolly()); if(NS4)navtxt.visibility="show"; if(W3C||IE4)navtxt.style.visibility="visible"; }} if(NS4)document.captureEvents(Event.MOUSEMOVE); document.onmousemove=moveobj; window.onload=function(){ navtxt=(NS4)? document.layers['navtxt'] : (IE4)? document.all['navtxt'] : (W3C)? document.getElementById('navtxt') : null; getboxwidth(); getboxheight(); getwindowdims(); isloaded=true; if((W3C || IE4) && centertext)navtxt.style.textAlign="center"; if(W3C)navtxt.style.padding='4px'; if(IE4 || IE5 && dofade)navtxt.style.filter="alpha(opacity=0)"; } window.onresize=getwindowdims;