function toggleListItem(el) {
	if (document.getElementById(el).className == 'closed') {
		document.getElementById(el).className = 'open';
	} else {
		document.getElementById(el).className = 'closed';
	}
}

back_normal_img = new Image();
back_normal_img.src = "images/back-button.gif";

back_mouseover_img = new Image();
back_mouseover_img.src = "images/back-button-hover.gif";

function swapMyImage(){
	if (document.images){
		for (var x=0; x<swapMyImage.arguments.length; x+=2) {
			document[swapMyImage.arguments[x]].src = eval(swapMyImage.arguments[x+1] + ".src");
		}
	}
}