var url = "";
	
try
{
	url = top.location.href;
}
catch(a)
{}
	
function tab(n) {
    for(var i = 1; i < 3; i++) {
        obj = document.getElementById('tab'+i);
        img = document.getElementById('tab_on_'+i);
        if ( n == i ) {
            obj.style.display = "block";
			img.height = 19;
            img.src = "images/tab_on_"+i+".jpg";    
        } else {
            obj.style.display = "none";
			img.height = 19;
            img.src = "images/tab_off_"+i+".jpg";  
        }
    }
}