/////////////////////////////validation start/////////////////////////
function validate_contactform(NForm){
	return Validate_Name(NForm) &&
				Validate_Phone(NForm) &&
				Validate_Email(NForm) &&
				Validate_Comment(NForm) &&
				true;
}
function Validate_Name(NForm){
 	NForm.t_name.focus();
 	if(NForm.t_name.value.length==0){ 
  	alert("You must enter Name"); 
  	return false; 
 	}else{
	  return true;
 	}
}
function Validate_Email(NForm){
	NForm.t_email.focus();
	if(NForm.t_email.value.length==0){ 
		alert("Please enter Valid EMAIL!"); 
	  return false; 
	}else{
		NForm.t_email.focus();
		var str = NForm.t_email.value;
		var reg1 = /(@.*@)|(\.\.)|(@\.)|(\.@)|(^\.)/; 
		var reg2 = /^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,3}|[0-9]{1,3})(\]?)$/;
		if (!reg1.test(str) && reg2.test(str)) {
			return true;
		}else{
			alert("Please enter Valid EMAIL!"); 
			return false; 
		}
	  return false;
	 }
}
function Validate_Phone(NForm){
 	NForm.t_phone.focus();
 	if(NForm.t_phone.value.length==0){ 
  	alert("You must enter Phone"); 
  	return false; 
 	}else{
	  return true;
 	}
}
function Validate_Comment(NForm){
 	NForm.m_comment.focus();
 	if(NForm.m_comment.value.length==0){ 
  	alert("You must enter Comment"); 
  	return false; 
 	}else{
	  return true;
 	}
}
function Validate_Subscribe(NForm){
	return Validate_Name(NForm) &&
				Validate_DOB(NForm) &&
				Validate_Nationality(NForm) &&
				Validate_Institution(NForm) &&
				Validate_Activity(NForm) &&
				Validate_Position(NForm) &&
				Validate_Email(NForm) &&
				Validate_Signature(NForm) &&
				true;
}
function Validate_DOB(NForm){
 	NForm.t_dob.focus();
 	if(NForm.t_dob.value.length==0){ 
  	alert("You must enter Date of Birth"); 
  	return false; 
 	}else{
	  return true;
 	}
}
function Validate_Nationality(NForm){
 	NForm.t_nationality.focus();
 	if(NForm.t_nationality.value.length==0){ 
  	alert("You must enter Nationality"); 
  	return false; 
 	}else{
	  return true;
 	}
}
function Validate_Institution(NForm){
 	NForm.t_institution.focus();
 	if(NForm.t_institution.value.length==0){ 
  	alert("You must enter Institution"); 
  	return false; 
 	}else{
	  return true;
 	}
}
function Validate_Activity(NForm){
 	NForm.t_activity.focus();
 	if(NForm.t_activity.value.length==0){ 
  	alert("You must enter Institution’s Activity"); 
  	return false; 
 	}else{
	  return true;
 	}
}
function Validate_Position(NForm){
 	NForm.t_position.focus();
 	if(NForm.t_position.value.length==0){ 
  	alert("You must enter Managerial Position"); 
  	return false; 
 	}else{
	  return true;
 	}
}
function Validate_Signature(NForm){
 	NForm.t_signature.focus();
 	if(NForm.t_signature.value.length==0){ 
  	alert("You must enter Signature"); 
  	return false; 
 	}else{
	  return true;
 	}
}