function validate() 
{
mNv=horizontalForm.firstName.value;
if (mNv=='') 
    {
alert('Please provide your first name.');
event.returnValue=false;
    }

mNv=horizontalForm.lastName.value;
if (mNv=='') 
    {
alert('Please provide your last or surname.');
event.returnValue=false;
    }
	 
mNv=horizontalForm.email.value;
if (mNv=='') 
    {
alert('Please provide a contact email');
event.returnValue=false;
    }
	 
	 mNv=horizontalForm.enquiry.value;
if (mNv=='') 
    {
alert('Please write your enquiry');
event.returnValue=false;
    }

}