function validate(){ 
var name = document.registration.name.value;
var address = document.registration.address.value;
var phone = document.registration.phone.value;
var email = document.registration.email.value;
var price = document.registration.price.value;
var how_many = document.registration.how_many.value;

if (document.registration.on_sale[0].checked) {
	var on_sale = document.registration.on_sale[0].value;
} else {
	if (document.registration.on_sale[1].checked) {
		var on_sale = document.registration.on_sale[1].value;
	} else {
		var on_sale = "";
	}
}	


if (name != "") {
	if (address != "") {
		if (phone != "")  {
			if (IsNumeric(phone))  {
				if (email != "")  {
					if (isEmail(email))  {
						if (price != "")  {
							if (IsPrice(price))  {
								if (on_sale != "")  {
									if (IsNumeric(how_many) || how_many == "")  {
										document.registration.action="registration.php";
										document.registration.method= "post";
										document.registration.submit(); 				
									} else {
										alert ("'How Many Gore-Tex Items' is not Numeric");
										document.forms[0].elements[21].select();
										document.forms[0].elements[21].focus();
									}
								} else {
									alert ("Please select 'Yes' or 'No' for 'On Sale'");
									document.forms[0].elements[17].select();
									document.forms[0].elements[17].focus();
								}
							} else {
								alert ("Price is not Numeric");				
								document.forms[0].elements[16].select();
								document.forms[0].elements[16].focus();
							}
						} else {
							alert ("Price is Blank");				
							document.forms[0].elements[16].select();
							document.forms[0].elements[16].focus();
						}
					} else {
						alert ("Email address is Invalid");				
						document.forms[0].elements[6].select();
						document.forms[0].elements[6].focus();
					}
				} else {
					alert ("Email is Blank");
					document.forms[0].elements[6].select();
					document.forms[0].elements[6].focus();
				}
			} else {
				alert ("Phone Number is Not Numeric");
				document.forms[0].elements[5].select();
				document.forms[0].elements[5].focus();
			}
		} else {
			alert ("Phone Number is Blank");
			document.forms[0].elements[5].select();
			document.forms[0].elements[5].focus();
		}
	} else {
		alert ("Address is Blank");
		document.forms[0].elements[4].select();
		document.forms[0].elements[4].focus();
	}		
} else {
	alert ("Name is Blank");	
	document.forms[0].elements[0].select();
	document.forms[0].elements[0].focus();
}
}

function isEmail(string) {
if (string.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) != -1)
return true;
else
return false;
}


function IsNumeric(strString)
   //  check for valid numeric strings	
   {
   var strValidChars = "0123456789-";
   var strChar;
   var blnResult = true;

   if (strString.length == 0) return false;

   //  test strString consists of valid characters listed above
   for (i = 0; i < strString.length && blnResult == true; i++)
      {
      strChar = strString.charAt(i);
      if (strValidChars.indexOf(strChar) == -1)
         {
         blnResult = false;
         }
      }
   return blnResult;
}


function IsPrice(strString)
   //  check for valid numeric strings	
   {
   var strValidChars = "0123456789.,";
   var strChar;
   var blnResult = true;

   if (strString.length == 0) return false;

   //  test strString consists of valid characters listed above
   for (i = 0; i < strString.length && blnResult == true; i++)
      {
      strChar = strString.charAt(i);
      if (strValidChars.indexOf(strChar) == -1)
         {
         blnResult = false;
         }
      }
   return blnResult;
}