var mnoff;

mnoff = 15;

function list(et)
{
 
eTarget=et
eTarget.style.display=="none" ? eTarget.style.display="block":eTarget.style.display="none"
eTarget.display=="none" ? eTarget.display="block":eTarget.display="none"

mnoff = et;
}

function mnset()
{

list(mnoff);

}