var win;

function PopUp(url,x,y) {
	if (url == null) 
	{
		return;
	}
	if(x==null || y==null)
	{
		x = 350;
		y = 300;
	}
	var str = "toolbar=no,location=no,directories=no,status=no, menubar=no,scrollbars=yes,resizable=yes,width="+x+" ,height="+y;
	win = window.open(url, "win",str);
	z = parseFloat(navigator.appVersion);
	if (navigator.appName.substring(0.8) == "Netscape" || z > 4)
	{
		this.win.focus();
	}
}

function print_history()
{
	window.print();
}