i wrote this code in order to expand node and all its parents node

function

PerformSearch()

 

{

 

 

    var tree = $find("MenuTree");

 

 

    var strToSearch = document.getElementById("txtSearchText").value;

 

 

    var node = tree.findNodeByText(strToSearch);

 

 

    var ParentNode=null;

 

 

 

    if(node)

 

    {

        node.highlight();

        node.scrollIntoView();

        ParentNode = node.get_parent();

 

        while (ParentNode != null)

 

            {

                ParentNode.expand();

                ParentNode = node.get_parent();

            }

 

    }

 

 

}

but its run very slowely,
is there another way to perform this action that wont take so long?

p.s. the tree contains 800 nodes