var popUpWin=0;
function popUpWindow(URLStr){
    
	var x,y,left, top, width, height;
	if (self.innerHeight) // all except Explorer
	{
		x = self.innerWidth;
		y = self.innerHeight;
	}
	else if (document.documentElement && document.documentElement.clientHeight)
		// Explorer 6 Strict Mode
	{
		x = document.documentElement.clientWidth;
		y = document.documentElement.clientHeight;
	}
	else if (document.body) // other Explorers
	{
		x = document.body.clientWidth;
		y = document.body.clientHeight;
	}
 
		width = 0.85*x;
		height = 0.9*y;
		left=(x-width)/2;
		top=(y-height)/2;
	
  popUpWin = window.open(URLStr, 'popUpWin', 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no,copyhistory=yes,width='+width+',height='+height+',left='+left+', top='+top+',screenX='+left+',screenY='+top+'');
  	if (popUpWin) {
		return false;
		popUpWin.focus();
	} else return true;
  popUpWin++;
}