Update function variable on same page

[Chris]

How do I get var to change to node_id each time a link with showlink
is clicked? The snip of the function below fires up in the body tag of
my document and other code is in a layer in the html body.

Can't figure it out.

Many thanks,

Chris


function showStuff(evt,txt){
var node = (evt.target) ? evt.target : ((evt.srcElement) ?
evt.srcElement : null );

if (node.getAttribute("NAME") == "showlink") {
node_id = node.getAttribute("ID");
}