var selected_id = null;
var dom = document.getElementById;

function swapIt(id, newclass) {
	if(dom) {
		if(selected_id != id) {
			el = document.getElementById(id);
			el.className = newclass;
			el.style.cursor = (document.all) ? "hand" : "pointer";
		}
	}
}

function down (id, oldclass, newclass){
	if(dom) {
		if(selected_id != null) {
			document.getElementById(selected_id).className = oldclass;
		}
		el.className = newclass;
		selected_id = id;
	}
}


function swapMenu(itemid, subid, classname) {
    if (dom) {
        var state = ($(itemid).hasClassName(classname) == true) ? 1 : 0;
        
        if (state === 1) {
            $(itemid).removeClassName(classname);
            $(subid).setStyle({display: 'none'});
        }
        else {
            $(itemid).className = classname;
            $(subid).setStyle({display: 'block'});
        }
    }
}