function showSubmenu(divid)
{
 if(divid == '1')
 {
 document.getElementById('submenu_1').style.display="block";
 document.getElementById('submenu_2').style.display="none";
 document.getElementById('submenu_3').style.display="none";
 document.getElementById('submenu_4').style.display="none";
 document.getElementById('submenu_5').style.display="none";
 }
  else if(divid == '2')
 {
 document.getElementById('submenu_1').style.display="none";
 document.getElementById('submenu_2').style.display="block";
 document.getElementById('submenu_3').style.display="none";
 document.getElementById('submenu_4').style.display="none";
 document.getElementById('submenu_5').style.display="none";
 }
  else if(divid == '3')
 {
 document.getElementById('submenu_1').style.display="none";
 document.getElementById('submenu_2').style.display="none";
 document.getElementById('submenu_3').style.display="block";
 document.getElementById('submenu_4').style.display="none";
 document.getElementById('submenu_5').style.display="none";
 }
  else if(divid == '4')
 {
 document.getElementById('submenu_1').style.display="none";
 document.getElementById('submenu_2').style.display="none";
 document.getElementById('submenu_3').style.display="none";
 document.getElementById('submenu_4').style.display="block";
 document.getElementById('submenu_5').style.display="none";
 }
  else
 {
 document.getElementById('submenu_1').style.display="none";
 document.getElementById('submenu_2').style.display="none";
 document.getElementById('submenu_3').style.display="none";
 document.getElementById('submenu_4').style.display="none";
 document.getElementById('submenu_5').style.display="block";
 }
}