function txtPostCode_OnKeyPress(e)
{
  var txt = e.srcElement ? e.srcElement : (e.target ? e.target : null);
	var key = e.keyCode ? e.keyCode : e.which;
  var txtVal = document.getElementById("txtPostCode");

	if (txt!=null)
	{		
		if (key==13 && txt.value.length>0 && txtVal.value.length>0)
		{
      OpenDeliveryArea();
      return false;
		}				
	}
}

function txtSearch_OnKeyPress(e)
{
  var txt = e.srcElement ? e.srcElement : (e.target ? e.target : null);
	var key = e.keyCode ? e.keyCode : e.which;
  var txtVal = document.getElementById("_ctl0_txtSearch");

	if (txt!=null)
	{		
		if (key == 13 && txt.value.length > 0 && txtVal.value.length > 0)
		{
      __doPostBack('_ctl0$btnSearch','');
      return false;
		}				
	}
}