var imageArray = new Array();

imageArray[0] = "grfx/hdr/header1.jpg"; 
imageArray[1] = "grfx/hdr/header2.jpg";
imageArray[2] = "grfx/hdr/header3.jpg";
imageArray[3] = "grfx/hdr/header4.jpg";
imageArray[4] = "grfx/hdr/header5.jpg";
imageArray[5] = "grfx/hdr/header6.jpg";
function doIt()
{
var rand = Math.floor(Math.random()*7);

var imgPath = "<img src='"+imageArray[rand]+"' alt='header' border='0' align='absmiddle' />";

document.getElementById("image").innerHTML = imgPath;

}// JavaScript Document