var originalBg;

function togglePopup(id, show)
{
	hideAllPopups();
	changeOpacity((show) ? '0.25' : '1');
	var popup = document.getElementById(id);
	if (popup && popup.className) {
		popup.className = (show) ? 'popup' : 'popupHide';
	}
}
function hideAllPopups()
{
	var popups = document.getElementsByTagName('div');
	for (var i=0; i < popups.length; i++) {
		if (popups[i] && popups[i].className && (popups[i].className.indexOf('popup') != -1)) {
			popups[i].className = 'popupHide';
		}
	}
}
function changeOpacity(value)
{
	var divs = document.getElementsByTagName('div');
	if (divs) {
		for (var i = 0; i < divs.length; i++) {
			if (divs[i] && (
				divs[i].className == 'menu1Div' ||
				divs[i].className == 'cNavBar' ||
				divs[i].className == 'contentplaceholder' ||
				divs[i].className == 'navBarBottom')) {
				
				divs[i].style.opacity = value;
				
				if (document.all) { //ie filter
					divs[i].style.position = 'relative'; //fix positioned elements + must "have layout"!
					if (divs[i].className == 'navBarBottom') { //positioned absolute from start
						divs[i].style.position = 'absolute';
					}
					if (!(divs[i].className == 'cNavBar')) {
						divs[i].style.backgroundColor = '#fff'; //to fix ie7 bug
					}
					else {
						divs[i].style.width = '868px';
					}
					
					divs[i].style.filter = 'alpha(opacity=' + value*100 + ')';
				}
			}				
		}
	}
}