function resetFields(whichform) {
  for (var i=0; i<whichform.elements.length; i++) {
    var element = whichform.elements[i];
	if (element.type == "submit") continue;
	if (!element.defaultValue) continue;
	element.onfocus = function() {
	  if (this.value == this.defaultValue) {
	    this.value = "";
	  }
	}
	element.onblur = function() {
	  if (this.value == "") {
	    this.value = this.defaultValue;
      }
	}
  }
}


function prepareForms() {
  for (var i=0; i<document.forms.length; i++) {
    var thisform = document.forms[i];
	resetFields(thisform);
	thisform.onsubmit = function() {
	  return validateForm(this);
	}
  }
}
/* addLoadEvent(prepareForms); */


function isFilled(field) {
  if (field.value.length < 1 || field.value == field.defaultValue) {
    return false;
  } else {
    return true;
  }
}


function isEmail(field) {
  if (field.value.indexOf("@") == -1 || field.value.indexOf(".") == -1) {
    return false;
  } else {
    return true;
  }
}


function validateForm(whichform) {
  for (var i=0; i<whichform.elements.length; i++) {
    var element = whichform.elements[i];
	if (element.className.indexOf("required") != -1) {
	  if (!isFilled(element)) {
	    alert("Please fill in the "+element.name+" field.");
		element.focus();
		return false;
	  }
	}
	if (element.className.indexOf("email") != -1) {
	  if (!isEmail(element)) {
	    alert("The "+element.name+" field must be a valid email address.");
		return false;
	  }
	}
  }
/*  if (document.all || document.getElementById) {
    for (i = 0; i < whichform.length; i++) {
      var tempobj = whichform.elements[i];
      if (tempobj.type.toLowerCase() == "submit" || tempobj.type.toLowerCase() == "reset")
        tempobj.disabled = true;
    }
  }*/
  return true;
}