var popUp;
function simplePopUp(url, Width, Height){
  	if(popUp && !popUp.closed){
    		popUp.location.replace(url);
  	}else{
	    	Left = (screen.width - Width ) /2;
	    	Top = (screen.height -Height) /2;
    		var opts = "width=" + Width + ",height=" + Height + ",left=" + Left + ",top=" + Top + ",location=0,menubar=0,resizable=1,scrollbars=1,status=0,titlebar=1,toolbar=0";
    		
    		popUp = open(url,"popup",opts);
  	}
  
	popUp.focus();
}