function getWindowWidth(){
	return document.documentElement.clientWidth ? document.documentElement.clientWidth : document.body.offsetWidth;
    }

function checkWidth(PictureName){
	var tempWidth = getWindowWidth();
	alert(tempWidth);
	tempWidth = Math.floor(tempWidth/2);
	alert(tempWidth);	
	tempElement = document.getElementById(PictureName);
	tempElement.style.visibility = 'visible';
	tempElement.style.position = 'absolute'
	tempElement.style.top = '10px';
	tempElement.style.left = tempWidth - 320 + "px";
}

function popUp(URL) {
day = new Date();
id = day.getTime();
eval("page" + id + " = window.open('images/' + URL, '" + id + "', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=1,width=640, height=500, left = 320,top = 0');");
}