/**
 * popup.js
 * 
 */

function popup(url, w, h)
{
	var aw, ah;
	aw = screen.availWidth;
	ah = screen.availHeight;
	
	if(!w || !h)
	{
		w = 510;
		h = 620;
	}
	
	var win = window.open("",
					"popup_window", 
					"width=" + w + ",height=" + h + ",scrollbars=0,resizable=0");
	win.moveTo((aw-w)/2, (ah-h)/2);
	win.location.href = url;
	win.focus();
	
}