function showText(text,id) {
	$("#" + id).html(text);
}

function clearField(id) {
	$("#" + id).html("");
}

function checkSelect() {
	if(document.getElementById("id1").value == "") {
		showText("please select a model!","selectInput");
		return false;
	} else { clearField("selectInput"); return true; }
}

function checkSelect2(id) {
	var doc = document.getElementById("id" + id);
	if(id < 20) { var inp = "selectInput2"; } else { var inp = "selectInput3"; }
	if(doc.value == "0") {
		doc.style.backgroundColor = "#CD3700";
		doc.style.color = "#fff";
		showText("please select a field",inp);
		return false;
	} else {
		doc.style.backgroundColor = "#fff";
		doc.style.color = "#000";
		clearField(inp);
		return true;
	}
}

function isEmpty(id) {
	var doc = document.getElementById("id" + id);
	if(doc.value == '') {
		showText("please select this field!","isempty" + id);
		return false;
	} else { clearField("isempty" + id); return true; }
}

function checkData() {
	if(!checkSelect() || !checkSelect2('14') || !checkSelect2('13') || !checkSelect2('12') || !checkSelect2('24') || !checkSelect2('23') || !checkSelect2('22') || !isEmpty(5) || !isEmpty(6)) {
		alert("you must select all fields!");
        return false;
	} else { return true; }
}

function checkDataNew() {
	if(!checkPickUpPlace() ||!checkPickUpPlace() || !checkSelect2('14') || !checkSelect2('13') || !checkSelect2('12') || !checkSelect2('24') || !checkSelect2('23') || !checkSelect2('22') ) {
		alert("you must select all fields!");
        return false;
	} else { return true; }
}

function checkData2() {
	if(!isEmpty(1) || !isEmpty(2) || !isEmpty(3) || !isEmpty(4) || !isEmpty(5) || !isEmpty(6)) {
		alert("you must select all fields!");
		return false;
	} else { return true; }
}

function isAgree() {
	if(document.getElementById('cb1').checked == true) { return true; }
	else { alert('you must read our terms!');return false; }
}
function checkit()
{
	var items=document.getElementByName('model');
	
	 for(i=0; i<items.length; i++) if(items[i].checked) return true;
	    return false;
	
}
function checkPickUpPlace() {
	if(document.getElementById("pick_city_id").value == "") {
		alert("please select a pick up city ot region!");
		return false;
	} else { clearField("selectInput"); return true; }
}
function checkPickUpPlace() {
	if(document.getElementById("return_city_id").value == "") {
		alert("please select a return city ot region!");
		return false;
	} else { clearField("selectInput"); return true; }
}