function getElementsByClassName(oElm, strTagName, strClassName){
	var arrElements = (strTagName == "*" && oElm.all)? oElm.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 switchTab(showTab) { 
	var arrElements = getElementsByClassName(document.getElementById("tabSet1"), "div", "tabContent");
	 
	for (var i=0;i<arrElements.length;i++) {
		arrElements[i].style.display = "none";
	} // Closes any open tabs.

	var arrTabs = document.getElementById("navTabs").getElementsByTagName("li");
	for (var i=0;i<arrTabs.length;i++) {
		arrTabs[i].className = "";
	} // Clear any 'current' tabs.
	
	document.getElementById(showTab).style.display = ""; // Open the desired tab.
	
	document.getElementById(showTab + '_link').className='current';// Write a class of 'current' to the containing element.
}