function popUp(URL,width,height) {
height=height+100;
width=width+50;
day = new Date();
id = day.getTime();
eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=1,width=" + width + ",height=" + height + ",left = 0,top = 0');");
}
function calculateHeight (width,height,newWidth) {
	if (newWidth < 1) {
		alert('You must enter a value greater than zero.');
		return false;
	}
	if (newWidth > width) {
		alert('You must enter a value less that the original width.');
		return false;
	}
	var ratio = width / height;
	var newHeight = newWidth / ratio;
	document.frm.newHeight.value = Math.round(newHeight);
	return true;
}