function pop_up(fileName,height,width,windowname)

	{

		t=new Date();

		y=t.getSeconds();

		newwindow=windowname+y;

		features = "location=no,toolbar=no,menubar=no,resizeable=no,scrollbars=no,height=" + height + ",width=" + width

		if (navigator.appName == "Netscape") features += ",screenX=200,screenY=100"

		else features += ",left=200,top=100"

		window.open(fileName,newwindow,features);

	}