var old=null; 
var btd = 0;
var oldpic=null;
var oldobj=null;
var obj=null;

function showmenu(id,oriid)
{   
    obj=document.getElementById(id);
    if(oldobj==null)
    {   
        if(obj.style.display=="none")
        {   
            document.getElementById(oriid).style.display="none";
            obj.style.display="block";          
        }        
    }
    else if(obj==oldobj){}
    else if(obj.style.display=="none")
    {
        obj.style.display="block";
        oldobj.style.display="none";
    }
    else
    {
        oldobj.style.display="block";
        obj.style.display="none";
    }
    oldobj=obj;
}


function replacepic(id,src)
{   
  var objp;
  objp = document.getElementById(id); 
  objp.src = src;   
} 

function changebakcol(id,col)
{
    var objp;
    objp = document.getElementById(id);
    objp.style.backgroundColor=col;
}