function menu_show_hide(theheader,theoption,classShow, classHide,classOpen,classClose)
{	
    if (document.getElementById) 
    {
		var switch_header = document.getElementById(theheader);		
    	var switch_id = document.getElementById(theoption);		
        if(switch_id.className != classShow) 
		{
           switch_id.className = classShow;
           switch_header.className = classOpen;
        }
		else
		{
           switch_id.className = classHide;
           switch_header.className = classClose;
        }	
    }
}