// array of messages to pop up
var messages = new Array(
"High quality music
typesetting",
"Jazz",
"New music",
"Scholarly editions",
"Mediæval music",
"Choral music",
"Web sites",
"Integrated volumes of
text and music",
"Font design",
"Typographic design",
"Web sites"
);
var messageInd=0;
var lastmessageInd=messageInd;
var messageStr= new String();
var strtoshow= new String();
// array of font sizes and faces (relying on spans in main.css to set size)
var fsize = new Array(
"",
"",
"",
"",
"",
"",
"",
""
);
var fsizeInd=(Math.round(Math.random()*10))%(fsize.length-1);
// array of font styles
var fstyle = new Array(
"",
"",
"",
""
);
var fstyleInd=(Math.round(Math.random()*10))%(fstyle.length-1);
// array to cancel font styles
var fstylecancel = new Array(
"",
"",
"",
""
);
// array to hold colours
var colours = new Array(
"#ffffff",
"#eeeeee",
"#dddddd",
"#cccccc",
"#bbbbbb",
"#aaaaaa",
"#999999",
"#888888",
"#777777",
"#666666",
"#555555",
"#444444",
"#333333",
"#222222",
"#111111",
"#000000"
)
var coloursInd=0;
var colourCount=0;
function generateMessage(){
messageInd=(Math.round(Math.random()*10))%(messages.length-1);
if(lastmessageInd==messageInd){
messageInd=(messageInd+1)%(messages.length-1);
}
lastmessageInd=messageInd;
messageStr=fsize[fsizeInd]+fstyle[fstyleInd]+messages[messageInd]+fstylecancel[fstyleInd]+"";
fstyleInd=(Math.round(Math.random()*10))%(fstyle.length-1);
fsizeInd=(Math.round(Math.random()*10))%(fsize.length-1);
return messageStr;
}
// Create the two DynEl objects that we'll use in the program.
// These must be created in the of the document, because
// the DynEl() constructor outputs a style sheet.
// NB this starts with empty message
var baseind=400;
var dynel0 = new DynEl(window, "d0", "", 0, 0);
var dynel1 = new DynEl(window, "d1", "", baseind, 20);
function displaymessage(){
randomsetup();
setInterval("fadefunc()",50);
}
function fadefunc(){
dynel1.setBody(""+messageStr+"");
colourCount=colourCount+1;
if(colourCount32){colourInd--;}
if(colourInd<0){
colourCount=0;
randomsetup();
}
}
function randomsetup(){
generateMessage();
var innerwidth=window.innerWidth;
if(typeof(innerwidth)!="number"){ // this means we are using IE
innerwidth=window.document.body.offsetWidth;
}
var availablespace=innerwidth-baseind;
if(messageStr.length > 18){
var dx=(Math.random())*availablespace*0.3;
}
else{
var dx=(Math.random())*availablespace*0.8;
}
if(messageStr.indexOf("
")==-1){
var dy=(Math.random()-0.5)*20;
}
else{
var dy=(Math.random()-0.5)*10;
}
dynel1.moveTo(dynel1.initial_left+dx,dynel1.initial_top+dy);
colourInd=0;
}