// Opens a popup window

function PopUpWindow(width,height,source,winname)

	{

		var l = (window.screen.width)/2 - width/2;

		var t = (window.screen.height)/2 - height/2;

		var url="width="+width+",height="+height+",toolbar=no,menubar=no,scrollbars=yes,left="+l+",top="+t;																									

		var pwin = open(source,winname,url);

		pwin.focus();

	}