function Popup(PG,WinName,H,W,Scroll) { //V 1.0
	
	var PopH=(screen.height - ((screen.height-screen.availHeight)*2));
	PopH=(PopH-H)/2;
	var PopW=(screen.width-W)/2;

	if (Scroll==true){
  		var scrollData = 'scrollbars=yes'
	}else{
		var scrollData = 'scrollbars=no'
	}
		
	try{
		Wpopup = window.open(PG,WinName,"top="+PopH+",left="+PopW+",height="+H+",width="+W+","+scrollData);
		Wpopup.focus();
  
		return (Wpopup);

	}catch(e){
		return (null)			
	}
	
}