var windowPopup = null;
function newWindow (URL,w,h,st,sc,rs,tb,mb) {
	if(windowPopup == null || windowPopup.closed) {
		top.document.windowPopup = window.open(URL, 'windowPopup', 'toolbar='+tb+',menubar='+mb+',status='+st+',scrollbars='+sc+',resizable='+rs+',left=5,top=5,width=' + w + ',height=' + h);
		top.document.windowPopup.focus();
	} else {
		top.document.windowPopup.location = URL;
		top.document.windowPopup.focus();
	}
}