var popped;

function popup(URL, title, width, height)
{
	if (popped)
	{
		popped.close();
	}
	//var p = 'toolbar=0,scrollbars=0,statusbar=0,menubar=0,resizable=0,width=' + width +',height=' + height;
	var p = 'width=' + width +',height=' + height;
	//alert(p);
	popped = window.open(URL, title, p);	
}