arr = new Image();
arr.src = "imgs/arr.gif";
arr_o = new Image();
arr_o.src = "imgs/arr_o.gif";

sq = new Image();
sq.src = "imgs/sq.gif";
sq_o = new Image();
sq_o.src = "imgs/sq_o.gif";

function a_menu(obj, id) {
if(obj.open) 
{
swon('menu'+id,'sq_o');
}

else {
swon('menu'+id,'arr_o');
} 

}

function h_menu(obj, id) {
if(obj.open) 
{
swon('menu'+id,'sq');
}
 
else {
swon('menu'+id,'arr');
} 

}

function m_menu(obj, id) {

if(obj.open) 
{
swon('menu'+id,'arr');

eval("submenu"+id).style.display='none';

}
 
else {
swon('menu'+id,'sq');
eval("submenu"+id).style.display='block';
} 
obj.open=!obj.open;
return false;
}

function swon(imagename, cacheimage) {

	document.images[imagename].src = eval(cacheimage + ".src");
}