>GetElementByName and GetElementbyID work, but it gets tougher if you are using a MasterPage.

There isn't a way to detect directly if a node exists. We have to scan:

function IFrameTransactionalLoad()
{
   lcDiv=document.getElementById('DIVTransactional')

   // If we already have a child
   if (lcDiv.hasChildNodes())
   {

      // For each child node
      for (var i=0; i<lcDiv.childNodes.length; i++)
      {
         var child=lcDiv.childNodes[i];

         // If this is an element node
         if (child.nodeType==1)
         {

            // If this is the script node
            if (child.nodeName=="script")
            {
               lcDiv.removeChild(child)
               break
            }

         }

      }

   }

}