// JavaScript Document
function getElementsByClassName(oElm, strTagName, strClassName){
	var arrElements = (strTagName == "*" && document.all)? document.all : oElm.getElementsByTagName(strTagName);
	var arrReturnElements = new Array();
	strClassName = strClassName.replace(/\-/g, "\\-");
	var oRegExp = new RegExp("(^|\\s)" + strClassName + "(\\s|$)");
	var oElement;
	for(var i=0; i<arrElements.length; i++){
		oElement = arrElements[i];      
		if(oRegExp.test(oElement.className)){
			arrReturnElements.push(oElement);
		}   
	}
	return (arrReturnElements)
}

function changeTabs(NewActive) {
	var CurrentOn;
	CurrentOn = getElementsByClassName(document.getElementById('available-nav'), 'li', 'on');
	for (i in CurrentOn) {
		CurrentOn[i].className = '';
	}
	document.getElementById(NewActive + '-tab').className = 'on';
	document.getElementById('available-list').style.display = 'none';
	document.getElementById('small-list').style.display = 'none';
	document.getElementById('medium-list').style.display = 'none';
	document.getElementById('large-list').style.display = 'none';	
	document.getElementById(NewActive + '-list').style.display = 'block';
}