var oldTabId;

function initTab() {
	var strHref = window.location.href;
	var paramTab = '1';
	if (strHref.indexOf("?")>-1) {
		var strQueryString = strHref.substr(strHref.indexOf("?")+1).toLowerCase();
		var aQueryString = strQueryString.split("&");
		for (var iParam=0; iParam<aQueryString.length; iParam++) {
			if (aQueryString[iParam].indexOf("tab=") > -1) {
				var aParam = aQueryString[iParam].split("=");
				paramTab = aParam[1];
				break;
			}
		}
	}
	switchTab(paramTab,true);
}

function switchTab (tabId,isFirst) {
	if (!isFirst) {
		var inActiveTab = document.getElementById('tab'+oldTabId);
		var tmp = inActiveTab.innerHTML;
		var oldTabLabel = tmp.substr(0,tmp.indexOf("<"));
		inActiveTab.innerHTML = '&raquo;<a href="javascript:switchTab(' + oldTabId + ',false);">'
								+ oldTabLabel + '<span class="screenReading"> - Tab </span></a>'
		inActiveTab.className = "tab";    
		document.getElementById('tab'+oldTabId+'content').style.display = "none";							
	}

	var activeTab = document.getElementById('tab'+tabId);
	var tabLabel = activeTab.getElementsByTagName('a')[0].innerHTML;
	activeTab.innerHTML = tabLabel + '<span class="screenReading"> - Tab - Selected </span>'
	activeTab.className = "tab tabSelected";
    document.getElementById('tab'+tabId+'content').style.display = "block";
         
    oldTabId = tabId;
}