function show_hide( objId ) {
        var obj = document.getElementById( objId );
        if (obj) {

		if (obj.style.display == "none" || !obj.style.display) {
			obj.style.display = "block";
		} else {
			obj.style.display = "none";
		}

        };
    };


    function hd( objId ) {
        var obj = document.getElementById( objId );
        if (obj) {

		if (obj.style.display == "none" || !obj.style.display) {
			obj.style.display = "none";
		}

        };
    };


function open_l(name) {
	 //elem = eval("document.all."+name);
	if (document.getElementById(name)!=null)
	{
		 elem = document.getElementById(name);
		if (elem.style.display == "none" || !elem.style.display) {
			elem.style.display = "block";
		} else {
			elem.style.display = "none";
		}
	}
}

    function shw_hide( objId ) {
        var obj = document.getElementById( objId );
        if (obj) {

            if (obj.style.display) {
                obj.style.display = (obj.style.display == 'none')? 'display' : 'none';
            }
            else {
                obj.style.visibility = (obj.style.visibility == 'hidden')? 'visible' : 'hidden';
            };
        };
    };