function popup(url,w, h)      
{
	var width = undefined != w
		? w
		: 800;
		
	var height = undefined != h
		? h
		: 600;
		
	var resizable = 'no'
	
	if(undefined != url
	   && '' != url) {
		//alert('url: ' + url);
		win = window.open(url,"PaP","height=" +height+ ",width=" +width+ ",scrollbars=yes,resizable=" +resizable);
		win.moveTo(0,0); 
	    win.focus();
	}
}