// clears and replaces text in form input fields and textareas
// -----------------------------------------------------------------
function clearText(thefield) {
  if (thefield.defaultValue==thefield.value) { thefield.value = "" }
} 
function replaceText(thefield) {
  if (thefield.value=="") { thefield.value = thefield.defaultValue }
}
sfHover = function() {

  var sfEls = document.getElementById("nav").getElementsByTagName("LI");

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

    sfEls[i].onmouseover=function() {

      this.className+=" sfhover";

    }

    sfEls[i].onmouseout=function() {

      this.className=this.className.replace(new RegExp(" sfhover\\b"), "");

    }

  }

 }

 if (window.attachEvent) window.attachEvent("onload", sfHover);