function EnableSubmit()
	{
	//
	//  Determines whether the submit button should be enabled or not
	//
	var blnEnableSubmit = true;

	if (document.frmenquiry["txtcontactname"].value.length == 0 || document.frmenquiry["txtcompanylocation"].value.length == 0 || document.frmenquiry["txtpostcode"].value.length == 0 || document.frmenquiry["txttelnumber"].value.length == 0 || document.frmenquiry["txtevetelnumber"].value.length == 0 || document.frmenquiry["txtemailaddress"].value.length == 0 || document.frmenquiry["cboagreementtype"].value == 'Please Select...' || document.frmenquiry["cbomake"].value == 'Please Select...' || document.frmenquiry["cbomileage"].value == 'Please Select...' || document.frmenquiry["txtmodel"].value.length == 0)
		{
		document.frmenquiry["cmdsubmit"].disabled = true;
		document.frmenquiry["cmdsubmit"].title = "Please enter all of the required fields";
		}	
	else
		{
		document.frmenquiry["cmdsubmit"].disabled = false;
		document.frmenquiry["cmdsubmit"].title = "";
		}
	}
	
function CheckEmail()
	{
  //
  //  Check email address is valid
  //
	if (!emailCheck(document.frmenquiry["txtemailaddress"].value))
	  {
		document.frmenquiry["txtemailaddress"].focus();
		return false;
		}	
  }