function deleteParent(event) {

      // Determine which element invoked this function

      var link = event.target || window.event.srcElement;

      // Get initial guess to who '.box' is

      var parent = link.parentNode;

      // Move up the parent list until we find '.box'

      while ( parent.className != "box" )

        parent = parent.parentNode;

​

      // Now that we've found '.box', hide it

      parent.style.display = "none";

      // Prevent anchor form navigating away from page

      if ( event.preventDefault ) {

        event.preventDefault();

      } else {

       window.event.returnValue = false; 

      }

    }

​

    // Get collection of all anchors

    var anchors = document.getElementsByTagName("a");

​

    // Iterate over the collection

    for ( var i = 0; i < anchors.length; i++ ) {

      // Create an 'alias' for the current anchor being considered

      var currentA = anchors[i];

      // Is this one of our '.delete' anchors?

      if ( currentA.className == "delete" ) {

        // Does this browser support addEventListener?

        if ( currentA.addEventListener ) {

          // Add an event handler via addEventListener

          currentA.addEventListener("click", deleteParent, false);

        // Or, does this browser use attachEvent?

        } else if ( currentA.attachEvent ) {

          // Add an event handler using attachEvent

          currentA.attachEvent("onclick", deleteParent);

        }

      }

    }