function loadLeftNav() {
  open_onmouseover(document.leftnav_index.submenu.value);
  return;
}

function open_onmouseover(sub_menu)
{
  switch (sub_menu){
    case "highspeed_sub":
      close_submenu("dialup_sub");
      close_submenu("hosting_sub");
      close_submenu("rapidserver_sub");
      close_submenu("development_sub");            
      open_submenu(sub_menu);
      break;
    case "dialup_sub":
      close_submenu("highspeed_sub");
      close_submenu("hosting_sub");
      close_submenu("rapidserver_sub");
      close_submenu("development_sub");            
      open_submenu(sub_menu);
      break;
    case "hosting_sub":
      close_submenu("highspeed_sub");
      close_submenu("dialup_sub");
      close_submenu("rapidserver_sub");
      close_submenu("development_sub");            
      open_submenu(sub_menu);
      break;
    case "rapidserver_sub":
      close_submenu("highspeed_sub");
      close_submenu("dialup_sub");
      close_submenu("hosting_sub");
      close_submenu("development_sub");            
      open_submenu(sub_menu);
      break;
  }  
  return;
}

function open_submenu(sub_menu){
  var ulSubMenu = document.getElementById(sub_menu);
  if( ulSubMenu ) {
	  if( "closed" == ulSubMenu.className ) {
		  ulSubMenu.className = "open";
		}
	}
	return true;
}
/*
 else {
			ulSubMenu.className = "closed";
		}
*/
function close_submenu(sub_menu)
{
  var ulSubMenu = document.getElementById(sub_menu);
  if( ulSubMenu ) {
	  if( "open" == ulSubMenu.className ) {
			ulSubMenu.className = "closed";
		}
	}
	return true;
}
/*
 else {
		  ulSubMenu.className = "open";      
		}
*/