function popupWindow (wWidth, wHeight, wHREF) {
		wPosX = (screen.availWidth / 2) - (wWidth / 2);
		wPosY = (screen.availHeight / 2) - (wHeight / 2);
		wFeatures = "top=" + wPosY + ", left=" + wPosX + ", width=" + wWidth + ", height=" + wHeight +
			", scrollbars=yes";
		window.open(wHREF, null, wFeatures);
	}
	function submitEmail(theObj) {
		emailAddr = theObj.value;
		// Validate the e-mail address...
		regExp = /^([\w-]+(\.[\w-]+)*)+@([\w-]+\.[\w-]+)+$/;
		if (!emailAddr.search(regExp)) {
			popupWindow(350, 150, 'newsletter_submit.asp?email=' + emailAddr);
			return false;
		} else {
			window.status = "";
			alert("Please enter a valid e-mail address.");
			theObj.select();
			return false;
		}
	}