function openwin(dd,ww,hh) {

tx = (screen.width - ww) / 2;
ty = (screen.height - hh) / 2; 

	 addWindow = window.open(dd,"callout","width="+ww+",height="+hh+ ",top="+ty+",left="+tx+",titlebar=no,toolbar=no,location=no,resizable=yes,status=no,menubar=no,scrollbars=no,fullscreen=no");
	 addWindow.focus() 
}
function openvid(dd,tg,ww,hh) {

tx = (screen.width - ww) / 2;
ty = (screen.height - hh) / 2; 

	 vidWindow = window.open(dd,"vidcallout","width="+ww+",height="+hh+ ",top="+ty+",left="+tx+",titlebar=no,toolbar=no,location=no,resizable=yes,status=no,menubar=no,scrollbars=no,fullscreen=no");
	 vidWindow.focus() 
}