function checkForm(){
	theForm = document.buyNowForm
	txtFel = "";
	
	if(theForm.S3.value=="" && theForm.D2.value==""){
		txtFel = txtFel + "- You need to enter a number of products\n";
	}
	
	if(theForm.name.value==""){
		txtFel = txtFel + "- You need to enter your name\n";
	}
	
	if(theForm.street.value==""){
		txtFel = txtFel + "- Your need to enter your street\n";
	}
	
	if(theForm.zipcode.value==""){
		txtFel = txtFel + "- Your need to enter your zip code\n";
	}
	
	if(theForm.city.value==""){
		txtFel = txtFel + "- Your need to enter your city\n";
	}
	
	if(theForm.Country.options[theForm.Country.selectedIndex].value==""){
		txtFel = txtFel + "- Your need to enter your country\n";
	}
	
	if(theForm.email.value==""){
		emailCheck(theForm.email.value);
		txtFel = txtFel + "- Your need to enter a calid e-mail address\n";
	}
	
	if(theForm.telephone.value==""){
		txtFel = txtFel + "- Your need to enter your telephone number\n";
	}
	
	if(theForm.VAT.value!=""){
	
		if(theForm.contactperson.value==""){
		txtFel = txtFel + "- Your need to enter your contact person\n";
		}
		
		if(theForm.contactemail.value==""){
		emailCheck(theForm.contactemail.value);
		txtFel = txtFel + "- Your need to enter your contacts e-mail\n";
		}
		
		if(theForm.contacttelephone.value==""){
		txtFel = txtFel + "- Your need to enter your contacts telephone number\n";
		}
	}
	
	
	if(txtFel!=""){
		alert("The following error(s) was found: \n\n" + txtFel)
		return false;
	}
		else{
		return true;
	}

}
function emailCheck (emailStr) {
/* The following pattern is used to check if the entered e-mail address
   fits the user@domain format.  It also is used to separate the username
   from the domain. */
var emailPat=/^(.+)@(.+)$/
/* The following string represents the pattern for matching all special
   characters.  We don't want to allow special characters in the address. 
   These characters include ( ) < > @ , ; : \ " . [ ]    */
var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
/* The following string represents the range of characters allowed in a 
   username or domainname.  It really states which chars aren't allowed. */
var validChars="\[^\\s" + specialChars + "\]"
/* The following pattern applies if the "user" is a quoted string (in
   which case, there are no rules about which characters are allowed
   and which aren't; anything goes).  E.g. "jiminy cricket"@disney.com
   is a legal e-mail address. */
var quotedUser="(\"[^\"]*\")"
/* The following pattern applies for domains that are IP addresses,
   rather than symbolic names.  E.g. joe@[123.124.233.4] is a legal
   e-mail address. NOTE: The square brackets are required. */
var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/
/* The following string represents an atom (basically a series of
   non-special characters.) */
var atom=validChars + '+'
/* The following string represents one word in the typical username.
   For example, in john.doe@somewhere.com, john and doe are words.
   Basically, a word is either an atom or quoted string. */
var word="(" + atom + "|" + quotedUser + ")"
// The following pattern describes the structure of the user
var userPat=new RegExp("^" + word + "(\\." + word + ")*$")
/* The following pattern describes the structure of a normal symbolic
   domain, as opposed to ipDomainPat, shown above. */
var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$")


/* Finally, let's start trying to figure out if the supplied address is
   valid. */

/* Begin with the coarse pattern to simply break up user@domain into
   different pieces that are easy to analyze. */
var matchArray=emailStr.match(emailPat)
if (matchArray==null) {
  /* Too many/few @'s or something; basically, this address doesn't
     even fit the general mould of a valid e-mail address. */
	alert("An email address seems incorrect (check @ and .'s)")
	return false
}
var user=matchArray[1]
var domain=matchArray[2]

// See if "user" is valid 
if (user.match(userPat)==null) {
    // user is not valid
    alert("The username doesn't seem to be valid.")
    return false
}

/* if the e-mail address is at an IP address (as opposed to a symbolic
   host name) make sure the IP address is valid. */
var IPArray=domain.match(ipDomainPat)
if (IPArray!=null) {
    // this is an IP address
	  for (var i=1;i<=4;i++) {
	    if (IPArray[i]>255) {
	        alert("Destination IP address is invalid!")
		return false
	    }
    }
    return true
}

// Domain is symbolic name
var domainArray=domain.match(domainPat)
if (domainArray==null) {
	alert("The domain name doesn't seem to be valid.")
    return false
}

/* domain name seems valid, but now make sure that it ends in a
   three-letter word (like com, edu, gov) or a two-letter word,
   representing country (uk, nl), and that there's a hostname preceding 
   the domain or country. */

/* Now we need to break up the domain to get a count of how many atoms
   it consists of. */
var atomPat=new RegExp(atom,"g")
var domArr=domain.match(atomPat)
var len=domArr.length
if (domArr[domArr.length-1].length<2 || 
    domArr[domArr.length-1].length>3) {
   // the address must end in a two letter or three letter word.
   alert("The address must end in a three-letter domain, or two letter country.")
   return false
}

// Make sure there's a host name preceding the domain.
if (len<2) {
   var errStr="This address is missing a hostname!"
   alert(errStr)
   return false
}

// If we've gotten this far, everything's valid!
return true;
}

function checkBox(){
	theForm = document.confirmBuyNow
	txtFel = "";

	if(theForm.TermsOfPurchase.checked == false)
	{
		alert ('You must agree to the Terms of Purchace to continue!');
		return false;
	} else { 	
		return true;
	}
}

function CheckPosInt(eSrc, msg) {	
	var num, tmp;
	var i;
		 
	num = eSrc.value;
	
	for(i=0; i < num.length; i++) {
		tmp = num.substring(i, i+1);
		if(!((tmp >= "0") && (tmp <= "9"))) {
			alert(msg);
			eSrc.focus();
			return false;
		}		
	}
	
	return true;
}

function replace(str, tecken, replaceTecken) {
	re = eval("/" + tecken + "/gi");
	return str.replace(re, replaceTecken);
}

function chkInput(obj, msg) {
	var res = false;
	
	if(obj != null) {		
		if(obj.value.length <= 1 ) {
			alert(msg);
			obj.focus();
		} else {
			res = true;
		}
	}
	return res;
}

function chkDdl(obj, msg) {
	var res = false;
	
	if(obj != null) {		
		if(obj.selectedIndex <= 0 ) {
			alert(msg);
			obj.focus();
		} else {
			res = true;
		}
	}
	return res;
}

function chkMail(obj, msg) {
	var res = false;
	
	if(obj != null) {
		var re=/^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9])+$/;
		if(!re.test(obj.value)) {
			alert(msg);
			obj.focus();
		} else {
			res = true;
		}
	}
	return res;
}

function chkTermsOfPurchase(obj, msg) {
	if(obj.checked == false)
	{
		alert (msg);
		return false;
	} else { 	
		return true;
	}	
}