function isValidEmail(str) {
   return (str.indexOf(".") > 2) && (str.indexOf("@") > 0);
 
}
function validate_feedback_us() {
	var obj = document.contact_us;
	if(obj.txtName.value == '') {
		alert('Please Enter Your Name.');
		obj.txtName.focus();
		return false;
	}
	if(obj.txtOrgnization.value == '') {
		alert('Please Enter Company.');
		obj.txtOrgnization.focus();
		return false;
	}
	if(obj.sltCountry.value == '') {
		alert('Please Select Country.');
		obj.sltCountry.focus();
		return false;
	}
	if(obj.txtPinCode.value == '') {
		alert('Please Enter PinCode.');
		obj.txtPinCode.focus();
		return false;
	}

	if(obj.txtEmail.value == '') {
		alert('Please Enter Email.');
		obj.txtEmail.focus();
		return false;
	}
	else {
		if(!isValidEmail(obj.txtEmail.value)) {
			alert('Please Enter Valid Email.');
			obj.txtEmail.focus();
			return false;
		}
	}
	if(obj.txtTelephone.value == '') {
		alert('Please Enter Telephone No.');
		obj.txtTelephone.focus();
		return false;
	}
	if(obj.slthear.value == '') {
		alert('Please Select - How did you hear about us?.');
		obj.slthear.focus();
		return false;
	}
	if(obj.sltService.value == '') {
		alert('Please Select Service.');
		obj.sltService.focus();
		return false;
	}
	if(obj.txtEnquiry.value == '') {
		alert('Please Enter Feedback / Enquiry.');
		obj.txtEnquiry.focus();
		return false;
	}
	return true;
}
function validate_contact_us() {
	var obj = document.contact_us;
	if(obj.txtFirstName.value == '') {
		alert('Please Enter Your Name.');
		obj.txtFirstName.focus();
		return false;
	}
	if(obj.txtEmail.value == '') {
		alert('Please Enter Email.');
		obj.txtEmail.focus();
		return false;
	}
	else {
		if(!isValidEmail(obj.txtEmail.value)) {
			alert('Please Enter Valid Email.');
			obj.txtEmail.focus();
			return false;
		}
	}
	if(obj.txtDesignation.value == '') {
		alert('Please Enter Designation.');
		obj.txtDesignation.focus();
		return false;
	}	
	if(obj.txtSubject.value == '') {
		alert('Please Enter Subject.');
		obj.txtSubject.focus();
		return false;
	}
	if(obj.contact_message.value == '') {
		alert('Please Enter Comments/Questions.');
		obj.contact_message.focus();
		return false;
	}
	return true;
}