function validate()
{ 
var emailRegex = /^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$/;
var email = document.form.email.value;
 if (document.form.Topic.value=="")
{
 alert("Please select a Topic!")
 return false;
 }
 if (document.form.Comments.value=="")
{
 alert("Please provide how we may help!")
 return false;
 }
if (document.form.Name.value=="")
{ 
alert("Please provide your name!")
 return false;
 }
 
if (document.form.Phone.value=="")
{ 
alert("Please enter your phone number!")
 return false;
 }

 if (document.form.email.value=="")
{ 
alert("Please provide your email address!")
 return false;
 }
  if(!email.match(emailRegex)) {
    alert("Please provide a valid email address!")
    return false;
  }
  if (document.form.txtCaptcha.value=="")
{ 
alert("Please fill in the word!")
 return false;
 }

  return true; 
}