function starttabs(){

    for (var i=0; i<arguments.length; i++){ //loop through passed UL ids
//        var ulobj=document.getElementById(arguments[i])
//        var ulist=ulobj.getElementsByTagName("li") //array containing the LI elements within UL
        var ulist=document.getElementById(arguments[i]).getElementsByTagName("li") //array containing the LI elements within UL
        for (var x=0; x<ulist.length; x++){ //loop through each LI element
            var ulistlink=ulist[x].getElementsByTagName("a")[0]
            if (ulistlink.getAttribute("rel")){
                var modifiedurl=ulistlink.getAttribute("href").replace(/^http:\/\/[^\/]+\//i, "http://"+window.location.hostname+"/")
                ulistlink.setAttribute("href", modifiedurl) //replace URL's root domain with dynamic root domain, for ajax security sake//save default ajax tab content
                ulistlink.onclick=function(){
                    showTab(this.id);
                    setVisible(['cl_'+this.id, 'cr_'+this.id], []);
                    return false
                }
            }
        }
    }
}
function showTab(nr){
    var tabCount = 5;
    var tab = document.getElementById(nr);
    for (var i = 1; i<=tabCount; i++) {
        if (document.getElementById('tab'+i)) {
            document.getElementById('tab'+i).className='';
        }
    }
    if(tab){
        tab.className = 'sel';
    }
}

function extLink(id){
    showTab('tab'+id);
    setVisible(['cl_tab'+id, 'cr_tab'+id], []);
}