function show_hidden_layer(id,is_visible)
{ 
var stat;
if(is_visible){stat='visible';statNN4='show';}
else          {stat='hidden';statNN4='hide';}

if(document.getElementById)//NN6,Mozilla,IE5
{
document.getElementById(id).style.visibility=stat;
}
else if(document.all)//IE4
{
document.all(id).style.visibility=stat;
}
else if(document.layers)//NN4
{
document.layers[id].visibility=statNN4;
}

return;
}

function shlall(id)
{ 
if('menu_sub02'!=id){show_hidden_layer('menu_sub02',0);}
if('menu_sub03'!=id){show_hidden_layer('menu_sub03',0);}
if('menu_sub04'!=id){show_hidden_layer('menu_sub04',0);}
if('menu_sub05'!=id){show_hidden_layer('menu_sub05',0);}
if('menu_sub01'==id){return;}
if('menu_sub06'==id){return;}
if('menu_sub07'==id){return;}
if('menu_sub08'==id){return;}
show_hidden_layer(id,1);
return;
}

function _GET(k)
{ 
var GET = new Array(); 
var query = window.location.search.substring(1); 
var parms = query.split('&'); 
for (var i=0; i<parms.length; i++) { 
var pos = parms[i].indexOf('='); 
if (pos > 0) { 
var key = parms[i].substring(0,pos); 
var val = parms[i].substring(pos+1); 
GET[key] = val; 
} 
} 
return GET[k];
}