function floatBG(){

//tmpImg = new Image()
//tmpImg.src = document.body.style.backgroundImage.split("(")[1].split(")")[0]

var x,y;
var test1 = document.body.scrollHeight;
var test2 = document.body.offsetHeight
if (test1 > test2) // all but Explorer Mac
{
	x = document.body.clientWidth;
	y = document.body.clientHeight;
}
else // Explorer Mac;
     //would also work in Explorer 6 Strict, Mozilla and Safari
{
	x = document.body.offsetWidth;
	y = document.body.offsetHeight;
}
document.body.style.backgroundAttachment = 'fixed'
document.body.style.backgroundPosition = '0 ' + String(y - 426)
delete tmpImg
}// JavaScript Document