asp.net treeview javascript search

Backward search:

 

function SearchBack(tv_id,str)
{
    var tree = document.getElementById(tv_id);
    var treeLinks =  tree.getElementsByTagName('A');
    eval('  var sel_name = '+tv_id+'_Data.selectedNodeID.value;');
    var elem;
    var sel_passed=0;
    for(var element in treeLinks )
    {
        var sub1=treeLinks[element].firstChild;

          if (sel_name && treeLinks[element].id==sel_name) {
                sel_passed =1;
                if (!sel_name || sel_passed==1) break;
          }
          if (sub1 &&  (''+sub1.value).indexOf(str) >=0)
          {
                //log("found"+treeLinks[element].id);
                elem=treeLinks[element];
            }
    }

        if (elem)  {
                eval('TreeView_SelectNode('+tv_id+'_Data,elem,"'+elem.id+'");');
                elem.focus();
                }else{
                alert('Not found');
                }
}
 

Forward search:

 

function SearchForward(tv_id,str)
{
    var tree = document.getElementById(tv_id);
    var treeLinks =  tree.getElementsByTagName('A');
    eval('  var sel_name = '+tv_id+'_Data.selectedNodeID.value;');
    var elem;
    var sel_passed=0;
    for(var element in treeLinks)
    {
        var sub1=treeLinks[element].firstChild;
          if (sub1 &&  (''+sub1.value).indexOf(str) >=0)
          {
                //log("found"+treeLinks[element].id);
                elem=treeLinks[element];
                if (!sel_name || sel_passed==1) break;
            }

          if (sel_name && treeLinks[element].id==sel_name) {
                sel_passed =1;
          }
    }
        if (elem)  {
                eval('TreeView_SelectNode('+tv_id+'_Data,elem,"'+elem.id+'");');
                elem.focus();
                } else{
                alert('Not found');
        }


}