var tree; 
function buildtree(){
tree = new YAHOO.widget.TreeView("protree"); 
var root = tree.getRoot(); 

var node52 = new YAHOO.widget.TextNode({ label: 'Deep groove ball bearings', href:'product.asp?cid=52' }, root, false); 

var node53 = new YAHOO.widget.TextNode({ label: 'Spherical roller bearings', href:'product.asp?cid=53' }, root, false); 

var node54 = new YAHOO.widget.TextNode('Cylindrical roller bearings', root, false); 

var node55 = new YAHOO.widget.TextNode('Thrust ball  bearings', root, false); 

var node56 = new YAHOO.widget.TextNode({ label: 'Tapered roller bearings', href:'product.asp?cid=56' }, root, false); 

var node57 = new YAHOO.widget.TextNode({ label: 'Bearing housing', href:'product.asp?cid=57' }, root, false); 

var node62 = new YAHOO.widget.TextNode({ label: 'Angular contact ball bearings', href:'product.asp?cid=62' }, root, false); 

var node63 = new YAHOO.widget.TextNode('Automotive bearings', root, false); 

var node64 = new YAHOO.widget.TextNode('Other', root, false); 

var node66 = new YAHOO.widget.TextNode({ label: 'Four row cylindrical roller bearings', href:'product.asp?cid=66' }, node54, false); 

var node67 = new YAHOO.widget.TextNode({ label: 'Single row cylindrical roller bearings', href:'product.asp?cid=67' }, node54, false); 

var node68 = new YAHOO.widget.TextNode({ label: 'Thrust ball bearings', href:'product.asp?cid=68' }, node55, false); 

var node69 = new YAHOO.widget.TextNode({ label: 'Thrust spherical roller bearings', href:'product.asp?cid=69' }, node55, false); 

var node75 = new YAHOO.widget.TextNode({ label: 'Belt tensioner', href:'product.asp?cid=75' }, node63, false); 

var node76 = new YAHOO.widget.TextNode({ label: 'Wheel hub bearings', href:'product.asp?cid=76' }, node63, false); 

var node77 = new YAHOO.widget.TextNode({ label: 'Agricultral bearings', href:'product.asp?cid=77' }, node64, false); 

var node78 = new YAHOO.widget.TextNode({ label: 'Ceramic bearings', href:'product.asp?cid=78' }, node64, false); 

var node79 = new YAHOO.widget.TextNode({ label: 'Stainless steel bearings', href:'product.asp?cid=79' }, node64, false); 

var node82 = new YAHOO.widget.TextNode({ label: 'Special', href:'product.asp?cid=82' }, node64, false); 

tree.draw(); 
}