<script type="text/javascript" charset="utf-8">
	$(function() {
		$('#entryform').submit(function() {
			validate_matrix_dropdown = function(field_id, validate_string) {
				$('select[name^='+field_id+']').each(function() {
					var blocks = $(this).attr('name').split('[');
					var row_id = blocks[1].slice(0, -1);
					if($(this).children(':selected').val() == validate_string) {
						$("textarea[name*='"+field_id+"["+row_id+"]']").each(function() {
							if($(this).val() == '') {
								alert('Please describe.')
								return false;
							}
						});
					}
				});

				return true;
			}

			if(!validate_matrix_dropdown('field_id_105', 'Other - please describe')) { return false; }
			if(!validate_matrix_dropdown('field_id_137', 'Other')) { return false; }

			var from_bits = $('input[name=field_id_36]').val();
			var to_bits = $('input[name=field_id_37]').val();
			if(from_bits == '') { return true;}
			from_bits = from_bits.split('/');
			to_bits = to_bits.split('/');
			var from_date = new Date(parseInt(from_bits[2]), parseInt(from_bits[1]) - 1, parseInt(from_bits[0]));
			if(to_bits != '') { var to_date = new Date(parseInt(to_bits[2]), parseInt(to_bits[1]) - 1, parseInt(to_bits[0]));	}
			else { var to_date = new Date(); }
			var difference_in_weeks = Math.ceil((to_date.getTime() - from_date.getTime()) / (1000 * 60 * 60 * 24 * 7));
			$('#field_id_39').val(difference_in_weeks);


			if($('#field_id_343').val() == "") {
				if($('#field_id_34').val() == '') { alert("You need to enter the 'Games Ambassador Forename'"); return false; }
				if($('#field_id_35').val() == '') { alert("You need to enter the 'Games Ambassador Surname'"); return false; }
				if($('#field_id_125').val() == '') { alert("You need to enter the ambassador's 'Age Range'"); return false; }
				if($('#field_id_99').val() == '') { alert("You need to enter the ambassador's 'Gender''"); return false; }
				if($('#field_id_36').val() == '') { alert("You need to enter the 'Games Ambassador Start Date'"); return false; }
				if($('#field_id_101').val() == '') { alert("You need to enter the 'Games Ambassador background'"); return false; }
				if($('#field_id_102').val() == '') { alert("You need to enter the 'Games Ambassador Interests'"); return false; }
				if($('#field_id_103').val() == '') { alert("You need to enter the 'Games Ambassador Aims/Ambitions/Goals'"); return false; }
				$('#field_id_343').val('Current');
			} else if($('#field_id_343') == 'Current') {
				if($('#field_id_37').val() == '') { alert("You need to enter the 'Games Ambassador Leave Date'"); return false; }
				if($('#field_id_38').val() == '') { alert("You need to enter the 'Reason for Leaving'"); return false; }
				$('#field_id_343').val('Past');
			}

			if($('input[name=field_id_37]').val() != '')
				alert('Please now update the Games Ambassador record with evidence of Positive Progressions and Achievements');

			return true;
		});

		$('.datepicker').attr('readonly', 'true');
	});
</script>