/* validation for 1st sequence */

function validateFields1a() {
	
	if (document.sequence1a.SystemQty.value == "") {
        alert("Please specify a quantity.");
		return false;
    }
	
	if (document.sequence1a.SystemQty.value == "0") {
        alert("Please specify a quantity greater than 0.");
		return false;
    }
	
	return true;
	}
	
function validateFields1b() {
	
	if (document.sequence1b.SystemQty.value == "") {
        alert("Please specify a quantity.");
		return false;
	}
	
	if (document.sequence1b.SystemQty.value == "0") {
        alert("Please specify a quantity greater than 0.");
		return false;
    }
	
	return true;
	}
	
	function validateFields1c() {
	
	if (document.sequence1c.Tanks1Qty.value >0 && document.sequence1c.Tanks1Type.selectedIndex <=0) {
		alert("Please specify the type of tank you wish to order.");
		return false;
	}
	
	if (document.sequence1c.Tanks2Qty.value >0 && document.sequence1c.Tanks2Type.selectedIndex <=0) {
		alert("Please specify the type of tank you wish to order.");
		return false;
	}
	
	if (document.sequence1c.Tanks3Qty.value >0 && document.sequence1c.Tanks3Type.selectedIndex <=0) {
		alert("Please specify the type of tank you wish to order.");
		return false;
	}
	
	return true;
	}
	
	
/* validation for 2nd sequence */

function validateFields2() {

	var howMany = 0;
	for (var i=0; i<document.sequence2.Tank.length; i++) {
	
	if (document.sequence2.Tank[i].checked == true) {
		howMany++;
		break;
		} 
	}
	if (howMany == 0) {
		alert("Please select a tank.");
		return false;
	}
	
	return true;
	}

	
/* validation for 3rd sequence */

function validateFields3() {

	var howMany = 0;
	for (var i=0; i<document.sequence3.Pump.length; i++) {
	
	if (document.sequence3.Pump[i].checked == true) {
		howMany++;
		break;
		} 
	}
	if (howMany == 0) {
		alert("Please select a pump.");
		return false;
	}
	
	return true;
	}

	
/* validation for 4th sequence */

function validateFields4() {

	var howMany = 0;
	for (var i=0; i<document.sequence4.Controller.length; i++) {
	
	if (document.sequence4.Controller[i].checked == true) {
		howMany++;
		break;
		} 
	}
	if (howMany == 0) {
		alert("Please select a controller.");
		return false;
	}
	
	return true;
	}
	

/* validation for final sequence */

function validateFieldsFinal() {
	
	if (document.finalorder.jobName.value == "") {
        alert("Please enter a Job name.");
		return false;
    }
	
	if (document.finalorder.Name.value == "") {
        alert("Please enter your name.");
		return false;
    }
	
	if (document.finalorder.Company.value == "") {
        alert("Please enter your company name.");
		return false;
    }
	
	if (document.finalorder.Address1.value == "") {
        alert("Please enter your address.");
		return false;
    }
	
	if (document.finalorder.City.value == "") {
        alert("Please enter your city.");
		return false;
    }
	
	if (document.finalorder.State.value == "") {
        alert("Please enter your state.");
		return false;
    }
	
	if (document.finalorder.Zip.value == "") {
        alert("Please enter your zip code.");
		return false;
    }
	
	if (document.finalorder.Phone.value == "") {
        alert("Please enter your phone number.");
		return false;
    }
	
	if (document.finalorder.EMail.value == "") {
        alert("Please enter your e-mail address.");
		return false;
    }
	
	if (document.finalorder.EMail.value.indexOf('@') < 0) {
		alert("Please enter a valid e-mail address.");
		return false;
	}
	
	return true;
	}