function validateForm()
	{
		if(document.f1.name.value=="")
			{
				alert("Please enter your full name")
				document.F1.name.focus();
			}
			
		else if(document.f1.address1.value=="")
			{
				alert("Please enter your address")
				document.F1.address1.focus();
			}
			
		else if(document.f1.email.value=="")
			{
				alert("Please enter your email address")
				document.F1.email.focus();
			}		
		
		// date validation
		else if((isNaN(document.f1.dob1.value))||(isNaN(document.f1.dob2.value))||(isNaN(document.f1.dob3.value))||(document.f1.dob1.value=="" || document.f1.dob2.value=="" || document.f1.dob3.value==""))
		{
			alert("Please enter a valid date of birth")
		}
		
		else if((document.f1.dob1.value < 1) || (document.f1.dob1.value > 31))
			{
				alert("Please enter a valid day - 1 to 31");
				document.f1.dob1.focus();
			}
		else if((document.f1.dob2.value < 1) || (document.f1.dob2.value > 12))
			{
				alert("Please enter a valid month - 1 to 12");
				document.f1.dob2.focus();
			}
				
		else
			{
				document.f1.submit();
			}
	}