var tDiv= new Array();
var currentUrl = window.location.href;
var i=1;
var tString;
while(document.getElementById("tab"+i))
{
    tDiv[i-1] = document.getElementById("tab"+i);
    var keyWord = tDiv[i-1].getAttribute("title");
    if(currentUrl.indexOf(keyWord)>0)
    {
        tString = tDiv[i-1].innerHTML.replace("_off.gif","_on.gif");
        tDiv[i-1].innerHTML=tString;
        
    }
    
    i++;
}