function popupWindow(url) {
  window.open(url,'popupWindow','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=yes,copyhistory=no,width=600,height=450,screenX=150,screenY=150,top=150,left=150')
}

function bookmarksite(title,url){
if (window.sidebar) // firefox
	window.sidebar.addPanel(title, url, "");
else if(window.opera && window.print){ // opera
	var elem = document.createElement('a');
	elem.setAttribute('href',url);
	elem.setAttribute('title',title);
	elem.setAttribute('rel','sidebar');
	elem.click();
} 
else if(document.all)// ie
	window.external.AddFavorite(url, title);
}

//image roll over functions

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

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) {
		button_01_over = newImage("images/button_01-over.jpg");
		button_02_over = newImage("images/button_02-over.jpg");
		button_03_over = newImage("images/button_03-over.jpg");
		button_04_over = newImage("images/button_04-over.jpg");
		button_05_over = newImage("images/button_05-over.jpg");
		button_06_over = newImage("images/button_06-over.jpg");
		button_07_over = newImage("images/button_07-over.jpg");
		preloadFlag = true;
	}
}