function Toggle(ImageName) {
	if (document.images[ImageName]) {
		if(document.images[ImageName].src.indexOf("_i.") > -1) {
			document.images[ImageName].src = document.images[ImageName].src.replace("_i.", "_a.");
		}
		else if (document.images[ImageName].src.indexOf("_a.") > -1) {
			document.images[ImageName].src = document.images[ImageName].src.replace("_a.", "_i.");
		}
	}
}


// Position the footer at the bottom of the page based on the content height and window height.

function getWindowHeight() {
	var windowHeight=0;
	if (typeof(window.innerHeight)=='number') {
		windowHeight=window.innerHeight;
	}
	else {
		if (document.documentElement && document.documentElement.clientHeight) {
			windowHeight=document.documentElement.clientHeight;
		}
		else {
			if (document.body&&document.body.clientHeight) {
				windowHeight=document.body.clientHeight;
			}
		}
	}
	return windowHeight;
}

function setFooter() {
	if (document.getElementById) {
		var windowHeight=getWindowHeight();
		if (windowHeight>0) {
			var contentHeight=document.getElementById('container').offsetHeight;
			var footerElement=document.getElementById('footer');
			var footerHeight=footerElement.offsetHeight;
			if (windowHeight-(contentHeight+footerHeight)>=0) {
				footerElement.style.position='relative';
				footerElement.style.top=(windowHeight-(contentHeight+footerHeight))+'px';
	
			}
			else {
				footerElement.style.position='static';
			}
		}
	}
}