Depth-First-Search algorithm

traverse.js

// Create a function that, given a DOM Element on the page, 
// will visit the element itself and all of its descendents 
// (not just its immediate children). For each element visited, 
// the function should pass that element to a provided callback function.

// The arguments to the function should be:
// a DOM element
// a callback function (that takes a DOM element as its argument)


function Traverse(p_element,p_callback) {
   p_callback(p_element);
   var list = p_element.children;
   for (var i = 0; i < list.length; i++) {
       Traverse(list[i],p_callback);  // recursive call
   }
}