function retrieve(node) {
	    if (node.nodeType==Node.ELEMENT_NODE) {
          for (var m = node.firstChild; m!=null; m = m.nextSibling)
	        retrieve(m);
	    }
	    else if (node.nodeType==Node.TEXT_NODE)
	      if (node.data.length>1)
	        arr[counter++] = node.data;
      }