function checkFields() {

	if (document.form.name.value == "") {
			alert("Please provide your name.");
			document.form.name.focus();
			return false;
			}


	if (document.form.email.value == "") {
     	alert("Please provide your email address");
      	document.form.email.focus();
      	return false;
   		} else {
      		var regexp = /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/;
      		if (!regexp.test(document.form.email.value)) {
         		alert("The email address you entered is invalid.\nPlease enter an email address of the form\nYOUREMAIL@DOMAIN.XXX");
        		document.form.email.focus();
         		return false;
      			}
   			}

	 if (document.form.phone.value == "") {
			alert("Please provide your phone number.");
			document.form.phone.focus();
			return false;
			}
			
	 if (document.form.company.value == "") {
			alert("Please provide your company name.");
			document.form.company.focus();
			return false;
			}
	 if (document.form.address1.value == "") {
			alert("Please provide your address.");
			document.form.address1.focus();
			return false;
			}
	 if (document.form.city.value == "") {
			alert("Please provide your city.");
			document.form.city.focus();
			return false;
			}

	 if (document.form.country.value == "") {
			alert("Please provide your country.");
			document.form.country.focus();
			return false;
			}

	if (document.form.zip.value == "") {
      			alert("Please provide your postal code.");
     			document.form.zip.focus();
     			return false;
   			}

	if (document.form.customer_po.value == "") {
      			alert("Please provide your purchase order number.");
     			document.form.customer_po.focus();
     			return false;
   			}

	if (document.form.number_returned.value == "1" && document.form.model_1.value == "") {
			alert("Please provide the model number for unit 1.");
			document.form.model_1.focus();
			return false;
			}
	 if (document.form.number_returned.value == "1" && document.form.serial_no_1.value == "") {
			alert("Please provide the serial number for unit 1.");
			document.form.serial_no_1.focus();
			return false;
			}

	 if (document.form.number_returned.value == "2" && document.form.model_1.value == "") {
			alert("Please provide the model number for unit 1.");
			document.form.model_1.focus();
			return false;
			}
	 if (document.form.number_returned.value == "2" && document.form.serial_no_1.value == "") {
			alert("Please provide the serial number for unit 1.");
			document.form.serial_no_1.focus();
			return false;
			}

	 if (document.form.number_returned.value == "2" && document.form.model_2.value == "") {
			alert("Please provide the model number for unit 2.");
			document.form.model_2.focus();
			return false;
			}
	 if (document.form.number_returned.value == "2" && document.form.serial_no_2.value == "") {
			alert("Please provide the serial number for unit 2.");
			document.form.serial_no_2.focus();
			return false;
			}


	 if (document.form.number_returned.value == "3" && document.form.model_1.value == "") {
			alert("Please provide the model number for the unit 1.");
			document.form.model_1.focus();
			return false;
			}
	 if (document.form.number_returned.value == "3" && document.form.serial_no_1.value == "") {
			alert("Please provide the serial number for unit 1.");
			document.form.serial_no_1.focus();
			return false;
			}

	 if (document.form.number_returned.value == "3" && document.form.model_2.value == "") {
			alert("Please provide the model number for unit 2.");
			document.form.model_2.focus();
			return false;
			}
	 if (document.form.number_returned.value == "3" && document.form.serial_no_2.value == "") {
			alert("Please provide the serial number for unit 2.");
			document.form.serial_no_2.focus();
			return false;
			}

	 if (document.form.number_returned.value == "3" && document.form.model_3.value == "") {
			alert("Please provide the model number for unit 3.");
			document.form.model_3.focus();
			return false;
			}
	 if (document.form.number_returned.value == "3" && document.form.serial_no_3.value == "") {
			alert("Please provide the serial number for unit 3.");
			document.form.serial_no_3.focus();
			return false;
			}


	 if (document.form.number_returned.value == "4" && document.form.model_1.value == "") {
			alert("Please provide the model number for unit 1.");
			document.form.model_1.focus();
			return false;
			}
	 if (document.form.number_returned.value == "4" && document.form.serial_no_1.value == "") {
			alert("Please provide the serial number for unit 1.");
			document.form.serial_no_1.focus();
			return false;
			}

	 if (document.form.number_returned.value == "4" && document.form.model_2.value == "") {
			alert("Please provide the model number for unit 2.");
			document.form.model_2.focus();
			return false;
			}
	 if (document.form.number_returned.value == "4" && document.form.serial_no_2.value == "") {
			alert("Please provide the serial number for unit 2.");
			document.form.serial_no_2.focus();
			return false;
			}

	 if (document.form.number_returned.value == "4" && document.form.model_3.value == "") {
			alert("Please provide the model number for unit 3.");
			document.form.model_3.focus();
			return false;
			}
	 if (document.form.number_returned.value == "4" && document.form.serial_no_3.value == "") {
			alert("Please provide the serial number for unit 3.");
			document.form.serial_no_3.focus();
			return false;
			}

	 if (document.form.number_returned.value == "4" && document.form.model_4.value == "") {
			alert("Please provide the model number for unit 4.");
			document.form.model_4.focus();
			return false;
			}
	 if (document.form.number_returned.value == "4" && document.form.serial_no_4.value == "") {
			alert("Please provide the serial number for unit 4.");
			document.form.serial_no_4.focus();
			return false;
			}


	 if (document.form.number_returned.value == "5" && document.form.model_1.value == "") {
			alert("Please provide the model number for unit 1.");
			document.form.model_1.focus();
			return false;
			}
	 if (document.form.number_returned.value == "5" && document.form.serial_no_1.value == "") {
			alert("Please provide the serial number for unit 1.");
			document.form.serial_no_1.focus();
			return false;
			}

	 if (document.form.number_returned.value == "5" && document.form.model_2.value == "") {
			alert("Please provide the model number for unit 2.");
			document.form.model_2.focus();
			return false;
			}
	 if (document.form.number_returned.value == "5" && document.form.serial_no_2.value == "") {
			alert("Please provide the serial number for unit 2.");
			document.form.serial_no_2.focus();
			return false;
			}

	 if (document.form.number_returned.value == "5" && document.form.model_3.value == "") {
			alert("Please provide the model number for unit 3.");
			document.form.model_3.focus();
			return false;
			}
	 if (document.form.number_returned.value == "5" && document.form.serial_no_3.value == "") {
			alert("Please provide the serial number for unit 3.");
			document.form.serial_no_3.focus();
			return false;
			}

	 if (document.form.number_returned.value == "5" && document.form.model_4.value == "") {
			alert("Please provide the model number for unit 4.");
			document.form.model_4.focus();
			return false;
			}
	 if (document.form.number_returned.value == "5" && document.form.serial_no_4.value == "") {
			alert("Please provide the serial number for unit 4.");
			document.form.serial_no_4.focus();
			return false;
			}

	 if (document.form.number_returned.value == "5" && document.form.model_5.value == "") {
			alert("Please provide the model number for unit 5.");
			document.form.model_5.focus();
			return false;
			}

	 if (document.form.number_returned.value == "5" && document.form.serial_no_5.value == "") {
			alert("Please provide the serial number for unit 5.");
			document.form.serial_no_5.focus();
			return false;
			}
	
 	if (document.form.sameaddr.checked == false && document.form.rs_company.value == "") {
			alert("Please provide your return shipment company name or check the Same Address box above.");
			document.form.rs_company.focus();
			return false;
			}
 	if (document.form.sameaddr.checked == false && document.form.rs_addr1.value == "") {
			alert("Please provide your return shipment address or check the Same Address box above.");
			document.form.rs_addr1.focus();
			return false;
			}
 	if (document.form.sameaddr.checked == false && document.form.rs_city.value == "") {
			alert("Please provide your return shipment city or check the Same Address box above.");
			document.form.rs_city.focus();
			return false;
			}

 	if (document.form.sameaddr.checked == false && document.form.rs_country.value == "") {
			alert("Please provide your return shipment country or check the Same Address box above.");
			document.form.rs_country.focus();
			return false;
			}
 	if (document.form.sameaddr.checked == false && document.form.rs_zip.value == "") {
      			alert("Please provide your return shipment postal code or check the Same Address box above.");
     			document.form.rs_zip.focus();
     			return false;
   			} 

	if (document.form.RMAtype[3].checked && document.form.techname.value == "") {
		alert("Please provide the Technical Contact Name.");
		document.form.techname.focus();
		return false;
		}

	if (document.form.RMAtype[3].checked && document.form.techemail.value == "") {
		alert("Please provide the Technical Contact Email Info.");
		document.form.techemail.focus();
		return false;
		}

	if (document.form.RMAtype[3].checked && document.form.techphone.value == "") {
		alert("Please provide the Technical Contact Phone Number.");
		document.form.techphone.focus();
		return false;
		}

	if (document.form.failure_analysis.checked == false) {
		document.form.failure_analysis.value = "No";
		}

	return true
			
	}


function showSPR( form ) {

    chosen = "";
    len = document.form.RMAtype.length;
    
    for (i=0; i<len; i++) {
    if (document.form.RMAtype[i].checked) {
       chosen = document.form.RMAtype[i].value;
       }
    }
    if (chosen == 'Prob') {
		document.getElementById("sprTableLeft").style.display = "block";
		document.getElementById("sprTableRight").style.display = "block";
        }
    else {
	    document.getElementById("sprTableLeft").style.display = "none";
	    document.getElementById("sprTableRight").style.display = "none";
    }
}