function toggleDiv(id)
    {
        var el = document.getElementById(id);
        var ela = document.getElementById(id + 'a')
        //alert(el);
	    if ( el.style.display != 'none' ) {
		    el.style.display = 'none';
		    ela.style.display = 'block';
	    }
	    else {
		    el.style.display = 'block';
		    ela.style.display = 'none';
	    }
	}
	function toggleSign(id)
	{
	    var el = document.getElementById(id);
	    el.src = (el.src.indexOf("collapse.gif") > -1)?"images/expand.gif":"images/collapse.gif";

	}