var imgArray = new Array("images/TL1.jpg", "images/TL2.jpg", "images/TL3.jpg", "images/TL4.jpg", "images/TL5.jpg");
var imgArrayLength = imgArray.length;
//var randomNbr = Math.round((imgArrayLength-1) * Math.random());
var randomNbr = Math.floor((Math.random() * imgArrayLength));
//document.imgRandom1.src = imgArray[randomNbr];
document.writeln('<div id="headerImage"><img name="imgRandom1" src="' + imgArray[randomNbr] + '" border="0" /></div>');