var form;
function openForm(url) {
	if (form == null || form.closed) {
		var winWidth = 756;
		var winHeight = 700;
		var windowURL = url;
		var windowName = 'formWindow';
		var windowfeatures = 'width='+winWidth+',height='+winHeight+',top=0,left=0,screenX=0,screenY=0,directories=0,location=0,scrollbars=1,menubar=0,status=1,toolbar=0,resizable=1';
		form = window.open(windowURL, windowName, windowfeatures);
		form.focus();
	} else {
		form.focus();
	}
}