var divName = 'divZoom';
var offX = -120;
var offY = -90;

function mouseX(evt) {if (!evt) evt = window.event; if (evt.pageX) return evt.pageX; else if (evt.clientX)return evt.clientX + (document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft); else return 0;}
function mouseY(evt) {if (!evt) evt = window.event; if (evt.pageY) return evt.pageY; else if (evt.clientY)return evt.clientY + (document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop); else return 0;}

function follow(evt) {
	if (document.getElementById) {
		var obj = document.getElementById(divName).style;
		obj.visibility = 'visible';
		obj.left = (parseInt(mouseX(evt))+offX) + 'px';
		obj.top = (parseInt(mouseY(evt))+offY) + 'px';
	}
}

function popOn(div) { 
	document.getElementById('divZoom').style.display = 'block';
	document.getElementById('imgZoom').src = div;

} 
function popOff(div) { 
	document.getElementById('divZoom').style.display = 'none';
	document.getElementById('imgZoom').src = '/images/trans.png';
}
window.onload=function(){ document.onmousemove = follow; }