menu_status = new Array(); 
function showHide(theid){
    if (document.getElementById) {
    var switch_id = document.getElementById(theid);

        if(menu_status[theid] != 'show') {
           switch_id.className = 'show';
           switch_style.backgroundImage = 'url(images/arrow1_hover.gif)';
		   menu_status[theid] = 'show';
        }else{
           switch_id.className = 'hide';
		   switch_style.backgroundImage = 'url(images/arrow1.gif)';
           menu_status[theid] = 'hide';
        }
    }
}
var last_expanded = '';

function showHide(id)
{
var obj = document.getElementById(id);

var status = obj.className;

if (status == 'hide') {

if (last_expanded != '') {
var last_obj = document.getElementById(last_expanded);
last_obj.className = 'hide';
}

obj.className = 'show';

last_expanded = id;
} else {
obj.className = 'hide';
}
}