function get_object(obj){
if (document.getElementById)
    return document.getElementById(obj);
else if (document.all)
    return document.all[obj];

}


function expand_obj(obj_name, cmd) {

var obj;

obj = get_object(obj_name);

if (obj) {
    if (cmd=="hide") {
        eval('obj.style.display="none"');
        }
    else if (cmd=="toggle") {
        if (obj.style.display=="none") {
            eval('obj.style.display=""');
            }
        else {
            eval('obj.style.display="none"');
            }
        }
    else if (cmd=="show"){
        eval('obj.style.display=""');
        }
    else {
        eval('obj.style.display="'+cmd+'"');
        }
    }
}


function set_opacity(obj_name, value) {

var html_obj = get_object(obj_name);

if (html_obj) {
	//CSS3 & mozilla
	html_obj.style.opacity = value/100;
	//IE
	html_obj.style.filter = 'alpha(opacity=' + value + ')';
	}
}