function checkFields()
  {
    var flag = true;
	var errorText = "";
	
	 if(document.form_small.fname.value == "") {
	    flag = false;
	    errorText += "\n Full name field should not be empty! ";
	 }
	 if(document.form_small.email.value == ""){
		flag = false;
		errorText += "\n Email field should not be empty! ";
	 } else {
	  if (!validate(document.form_small.email.value))
	        flag = false;
			errorText += "\n Not a valid Email Address! ";
	 }
	 if(document.form_small.message.value == ""){
		flag = false;
		errorText += "\n Message field should not be empty! ";
	 }
	 if(!flag)
	    alert(errorText);
	 else
	   document.form_small.submit();
  }
  
  function validate(email) {
   var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
   if(reg.test(email) == false) {
      return false;
   }else
     return true;
}