function explain(searchType){
	filterElement = document.getElementById("filter");
	if ((filterElement.style.color == "rgb(169, 169, 169)") || (filterElement.value == "")) {
		if (searchType.value=="driver"){
			filterElement.style.color = "#A9A9A9";
			filterElement.value="First or Last name"
		}else if (searchType.value=="vehicle"){
			filterElement.style.color = "#A9A9A9";
			filterElement.value="type, make, or model"
		}else if (searchType.value=="location"){
			filterElement.style.color = "#A9A9A9";
			filterElement.value="city, state, or country"
		}else if (searchType.value==""){
			filterElement.value="";
		}
	}
}

function clearField(filterElement){
	//done to handle both firefox/netscape format and IE format
	if ((filterElement.style.color == "rgb(169, 169, 169)") || (filterElement.style.color == "#a9a9a9")){
		filterElement.style.color = "#000000";
		filterElement.value="";
	}
}

function checkSearchType(theForm) {
	if (theForm.filter_type.value=="") {
		alert("Please select a search type.");
		theForm.filter_type.focus();
		return false;
	}
	return true;
}