function popUp(URL,w,h) {

        winl = (screen.width - w) / 2;
        wint = (screen.height - h) / 2;
		parameters = "toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=1,width="+w+",height="+h+",top="+wint+",left="+winl;

		newwin=window.open(URL,'newwin',parameters);
		newwin.focus();
    }