function Toggle(node)
{
 // Unfold the branch if it isn't visible

 snode = node;
 while (snode.nodeName != "UL")
 {
   snode = snode.nextSibling;
 }

 if (snode.className == 'navig_closedBranch')
 {
   node.className = "navig_minus";
   snode.className = 'navig_openBranch';
 }
 // Collapse the branch if it IS visible
 else
 {
   node.className= "navig_plus";
   snode.className = 'navig_closedBranch';
 }

}