function openWindow(src){
	xPos = (screen.availWidth/2-220);
  yPos = (screen.availHeight/2-150);
	window.open('images/'+src+'.jpg','newWindow','width=440,height=300,left='+xPos+',top='+yPos+',resizable=no,scrollbars=yes,location=no,directories=no,status=no,menubar=yes,toolbar=no');
}