/************************************************************************************
   JavaScript File:  validate.js
   Description    :  validates Web Composer Form Creator forms
   
   This javascript is a modified version of the ones at the Javascript Source site:
   http://javascript.internet.com/forms/basic-validation.html
   http://javascript.internet.com/forms/check-email.html
   
*************************************************************************************/  
function checkrequired(which) {
return checkrequired_english_french(which, 'english')
}

function checkrequired_french(which) {
return checkrequired_english_french(which, 'french')
}


function checkrequired_english_french(which, language) {
	var blank_pass=true;
	var email_pass=true;

	if (document.images) {

		for (i=0;i<which.length;i++) {
			var tempobj=which.elements[i];

			if (tempobj.name.substring(0,3)=="man") {

				if (((tempobj.type=="text"||tempobj.type=="textarea")&& tempobj.value=='') || (tempobj.type.toString().charAt(0)=="s" && tempobj.selectedIndex==-1)) {		 
					blank_pass=false;
					break;
				}
			

			} 
			
			// if an e-mail address, validate it
			emailName = tempobj.name.substring(8,30).toLowerCase();
			var start_emailpos = emailName.indexOf("_");
			emailName = emailName.substring(start_emailpos+1,40);
			if (emailName=="email" || emailName=="courriel") {					
				if (!(emailCheck(tempobj.value))) {
					email_pass=false;
					break;
				}					
				
				
			}
		}
	}



	if (!blank_pass) {
		shortFieldName=tempobj.name.substring(8,30).toUpperCase();
		var start_pos = shortFieldName.indexOf("_");
		shortFieldName = shortFieldName.substring(start_pos+1,40);
		if(language=='french')
		    alert("Veuillez vous assurer que la zone "+shortFieldName+" est bien remplie.");
                else
                    alert("Please make sure the "+shortFieldName+" field was properly completed.");
		return false;
	} else if (!email_pass) {
		shortFieldName=tempobj.name.substring(8,30).toUpperCase();
		var start_pos = shortFieldName.indexOf("_");
		shortFieldName = shortFieldName.substring(start_pos+1,40);
		if(language=='french')
		    alert("Veuillez vous assurer que l'adresse \"EMAIL\" "+shortFieldName+" est valide.");
                else
                    alert("Please make sure the "+shortFieldName+" is a valid e-mail address.");
		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("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;
}