function ClearCounty()
{
	idx = 0;
	if (document.criteria.county) {
		if (document.criteria.county.selectedIndex != -1) {
			while (idx < document.criteria.county.length) {
				if (document.criteria.county.options[idx].selected) {
					document.criteria.county.options[idx].selected = false;
				}
				idx++;
			}
		}
	}
	return 1;
}

function ClearCity()
{
	idx = 0;
	if (document.criteria.city) {
		if (document.criteria.city.selectedIndex != -1) {
			while (idx < document.criteria.city.length) {
				if (document.criteria.city.options[idx].selected) {
					document.criteria.city.options[idx].selected = false;
				}
				idx++;
			}
		}
	}
	return 1;
}

function ClearArea()
{
	idx = 0;
	if (document.criteria.area) {
		if (document.criteria.area.selectedIndex != -1) {
			while (idx < document.criteria.area.length) {
				if (document.criteria.area.options[idx].selected) {
					document.criteria.area.options[idx].selected = false;
				}
				idx++;
			}
		}
	}
	return 1;
}

function VerifyCityCountySelection( )
{
	if (document.criteria.city && document.criteria.county) {
		if (document.criteria.city.selectedIndex == -1 && document.criteria.county.selectedIndex == -1) {
			alert( "Please choose at least one City or County");
			return false;
		} else {
			return true;
		}
	}
	if (document.criteria.city) {
		if (document.criteria.city.selectedIndex == -1) {
			alert( "Please choose at least one City");
			return false;
		} else {
			return true;
		}
	}
	if (document.criteria.county) {
		if (document.criteria.county.selectedIndex == -1) {
			alert( "Please choose at least one County");
			return false;
		} else {
			return true;
		}
	}

	return true;
}

function VerifyCityAreaSelection( )
{
	if (document.criteria.city && document.criteria.area) {
		if (document.criteria.city.selectedIndex == -1 && document.criteria.area.selectedIndex == -1) {
			alert( "Please choose at least one City or Area");
			return false;
		} else {
			return true;
		}
	}
	if (document.criteria.city) {
		if (document.criteria.city.selectedIndex == -1) {
			alert( "Please choose at least one City");
			return false;
		} else {
			return true;
		}
	}
	if (document.criteria.area) {
		if (document.criteria.area.selectedIndex == -1) {
			alert( "Please choose at least one Area");
			return false;
		} else {
			return true;
		}
	}

	return true;
}