function popUp(popup_url, popup_width, popup_height){
	var undefined;
	if (popup_width == undefined){
		popup_width = 300;
		//popup_width = window.screen.availWidth;
	}
	if (popup_height == undefined){
		popup_height = 300;
		//popup_height = window.screen.availHeight;
	}
	day = new Date();
	id = day.getTime();
	eval("page" + id + " = window.open(popup_url, '" + id + "', 'toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=1,width=" + popup_width + ",height=" + popup_height + ",left = 150,top = 100');");
}