//declare images
function newImage(arg) {
	if (document.images) {		
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

//image swaps
function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		homenav_over = newImage("images/homenav-over.gif");
		knowledgenav_over = newImage("images/knowledgenav-over.gif");
		servicesnav_over = newImage("images/servicesnav-over.gif");
		clientsnav_over = newImage("images/clientsnav-over.gif");
		loginnav_over = newImage("images/loginnav-over.gif");
		contactnav_over = newImage("images/contactnav-over.gif");
		signupbox_over = newImage("images/signupbox-over.gif");
		preloadFlag = true;
	}
}

//pop up
function openDetail(url) {
detailWindow=window.open(url,'detailWin','width=515,height=275,toolbar=no,location=no,scrollbars,resizable');
detailWindow.focus();
}

//big pop up
function openBigDetail(url) {
detailWindow=window.open(url,'detailWin','width=700,height=600,toolbar=no,location=no,scrollbars,resizable');
detailWindow.focus();
}

//paypal pop up
function openPayPal(url) {
detailWindow=window.open(url,'detailWin','width=800,height=600,toolbar=no,location=no,scrollbars,resizable');
detailWindow.focus();
}