function dealerKeywordChange(elem) {
	if(elem.value !== '') {
		document.getElementById("zip_code").value = '';
		document.getElementById("map_radius").options[0].selected = true;
		document.getElementById("search_province").options[0].selected = true;
		document.getElementById("search_state").options[0].selected = true;
	}
}

function dealerStateChange(elem) {
	if(elem.value !== '0') {
		document.getElementById("keyword").value = '';
		document.getElementById("zip_code").value = '';
		document.getElementById("map_radius").options[0].selected = true;
		document.getElementById("search_province").options[0].selected = true;
	}
}

function dealerProvinceChange(elem) {
	if(elem.value !== '0') {
		document.getElementById("keyword").value = '';
		document.getElementById("zip_code").value = '';
		document.getElementById("map_radius").options[0].selected = true;
		document.getElementById("search_state").options[0].selected = true;
	}
}

function dealerZipChange(elem) {
	if(elem.value !== '') {
		document.getElementById("map_radius").options[1].selected = true;
		document.getElementById("keyword").value = '';
		document.getElementById("search_province").options[0].selected = true;
		document.getElementById("search_state").options[0].selected = true;
	}	
	else { document.getElementById("map_radius").options[0].selected = true; }
}

function dealerRadiusChange(elem) {
	if(elem.value !== '0') {
		document.getElementById("keyword").value = '';
		document.getElementById("search_province").options[0].selected = true;
		document.getElementById("search_state").options[0].selected = true;
	}	
}