function ValidateForm(mode)
{
	var cnt = 0;
	cnt += CheckField("firstName");
	cnt += CheckField("surname");
	cnt += CheckField("emailAddress");
	cnt += CheckField("postcode");
	cnt += CheckField("mobileNumber");
	if (mode == 0)
	{
		cnt += CheckField("formSite");
	}
	if (cnt > 0)
	{
		alert("Please enter all the mandatory fields.");
		return false;
	}
	else
	{
		return true;
	}
}

function CheckField(field)
{
	var el = document.getElementById(field)
	if (el.value == "" || (el.value == "0"))
	{
		el.style.border = "2px solid red";
		return 1;
	}
	else
	{
		el.style.border = "2px solid silver";
		return 0;
	}
}