function checkForm()
{
var valid = true;
for (i=0; i < this.length; i++)
{
if ($(this[i]).hasClass("compulsory"))
{
var type = this[i].type.toLowerCase();
if (type == "textarea" || type == "text" || type == "password"){
if (this[i].value == this[i].defaultValue || this[i].value == "")
{
$(this[i]).addClass("errorField");
valid = false;
}
else
{
$(this[i]).removeClass("errorField");
}
}
else
{
if (type == "checkbox" && !this[i].checked)
{
valid = false;
}
}
}
}
if(!valid)
{
alert('Please fill in required fields.')
}
else
{
for (i=0; i < this.length; i++)
{
var type = this[i].type.toLowerCase();
if (type == "textarea" || type == "text" || type == "password")
{
if(this[i].value == this[i].defaultValue)
{
this[i].value = '';
}
}
}
}
return valid;
}

function checkValue ()
{
if(this.value == this.defaultValue)
{
this.value = "";
}
else if(this.value=="")
{
this.value = this.defaultValue;
}
}


(function ($) {
  $(document).ready(
    function(){
      $("#contactForm").bind("submit", checkForm);
      $("#contactForm textarea, #contactForm input[type='text']").each(function(){
      $(this).bind("focus", checkValue);
      $(this).bind("blur", checkValue);
    });
  });
})(jQuery);