function PopUp(URL,w,h,name){
	if (document.all){
		var xMax = screen.width, yMax = screen.height;
	}
	else {
    	if (document.layers){
        	var xMax = window.outerWidth, yMax = window.outerHeight;
        }
    	else {
        	var xMax = 800, yMax=600;  	
        }
    }
    var xOffset = (xMax - w)/2, yOffset = 0;
    window.open(URL,name,'width='+w+',height='+h+',screenX='+xOffset+',screenY='+yOffset+',top='+yOffset+',left='+xOffset+',directories=no,location=no,menubar=no,scrollbars=yes,status=yes,toolbar=no,resizable=no');
}