var state = 'none';
var menutimer = 0;

function showhide(layer_ref) {

state = 'block';

if (document.all) { 

eval( "document.all." + layer_ref + ".style.display = state");

}
if (document.layers) {

document.layers[layer_ref].display = state;

}
if (document.getElementById &&!document.all) {

hza = document.getElementById(layer_ref);
hza.style.display = state;
}
document.getElementById("services").setAttribute("style", "background-position: 0px -30px;");
changeClass()
}

function starttimer(layer_ref)
{
layer_ref2 = layer_ref;
menutimer = setTimeout("showhide2(layer_ref2)", 3000);
}

function showhide2(layer_ref) {

state = 'none';

if (document.all) { 

eval( "document.all." + layer_ref + ".style.display = state");

}
if (document.layers) {

document.layers[layer_ref].display = state;

}
if (document.getElementById &&!document.all) {

hza = document.getElementById(layer_ref);
hza.style.display = state;

}
document.getElementById("services").setAttribute("style", "background-position: 0px 0px;");
changeClass2();
}

function changeClass(){
document.getElementById(defaultmenu).setAttribute("style", "background-position: 0px 0px;");
}

function changeClass2(){
document.getElementById(defaultmenu).setAttribute("style", "background-position: 0px -30px;");
}