function link(obj,b){
 var id=obj.id+""
// alert(eval(id+"_1.style"))
 if (b)
 {
   eval("document.all."+id+"_1.style.display='none'")
   eval("document.all."+id+"_2.style.display='block'")
   eval("document.all."+id+"_3.style.background='none'")
 }
 else
 {
   eval("document.all."+id+"_1.style.display='block'")
   eval("document.all."+id+"_2.style.display='none'")
   eval("document.all."+id+"_3.style.background='url(images/menu_top_bg.gif)'")
 }
}

function TreeRun(img1,img2, inc)
{
	if (img2.style.display=='none')
	{
		img1.style.display='none';
		img2.style.display='block';
		inc.style.display='block';
	}
	else
	{
		img1.style.display='block';
		img2.style.display='none';
		inc.style.display='none';
	}
	return true;
}