/**************************************/
/*
Lloyd Engineering Ltd.
CopyrightŠUnite and Rule Ltd.
*/
/**************************************/

/**************************************/
/* Swap the active CSS */
function setActiveStyleSheet(title) {
	if (document.getElementsByTagName) {
		for (i=0; (a = document.getElementsByTagName("link")[i]); i++) {
			if (a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) a.disabled = true;
			if (a.getAttribute("title") == title) a.disabled = false;
		}
	}
}

/**************************************/
/* Popup */
function popup (obj, iW, iH) {
	var winW = iW;
	var winH = iH;
	var winName = '_blank';
	var winL = (screen.width - winW) / 2;
	var winT = ((screen.height - winH) / 2) - 50;
	window.open(obj.href, winName, 'location=no, toolbar=no, status=no, directories=no, scrollbars=yes, menubar=no, resizable=no, left=' + winL + ', top=' + winT +', width=' + winW + ', height=' + winH);
}

/**************************************/
/* validate contact form */
function validateContact(oForm) {
	var bValid = true;

	//check email
	if (validateEmail(oForm.email) == false) {
		alert('Please enter a valid email address');
		return false;
	}

	return true;
}

/**************************************/
/* validate the email field */
function validateEmail(field) {
	with (field) {
		apos=value.indexOf("@");
		dotpos=value.lastIndexOf(".");
		if (apos<1||dotpos-apos<2) { return false; }
		else { return true; }
	}
}


function RefreshImage(valImageId) {
	var objImage = document.images[valImageId];
	if (objImage == undefined) {
		return;
	}
	var now = new Date();
	objImage.src = objImage.src.split('?')[0] + '?x=' + now.toUTCString();
}