//check the max lenght of the comments text box 
//and if it is exceeding, fire an validation message

function checkMaxLength(source, args)
{	
	if( args && args.length != '' && args.length <= 4000)
	      return true;
	else 
		return false;
}

//This function is used to restrict the html tags in the textboxes
function checkHTMLText(source, args)
{	
	if(args && args.length != '' && (args.toString().indexOf("<") >= 0 || args.toString().indexOf(">") >= 0))
	      return false;
	else 
		return true;
}


            function ValidateEmail(aControlID)
            {
                
                 if (mTrim(document.getElementById(aControlID).value) == "")
                 {
                 
                    alert('Please Enter Valid EmailID.');
                    document.getElementById(aControlID).value = '';
                    document.getElementById(aControlID).focus();
                    return false;
                 
                 }
                 else
                 {
                    if(isEmail(mTrim(document.getElementById(aControlID).value)))
                        return true;
                    else
                    {   
                        document.getElementById(aControlID).value = '';
                        document.getElementById(aControlID).focus();
                        return false;
                    }
                 }

            }
            function mTrim(aStrValue)
            {

	            if (!aStrValue) 
		            return "";

	            // this loop will get rid of leading spaces
	            while (aStrValue.substring(0,1) == ' ')
		            aStrValue = aStrValue.substring(1, aStrValue.length);
	            // this loop will get rid of trailing spaces
	            while (aStrValue.substring(aStrValue.length-1,aStrValue.length) == ' ')
		            aStrValue = aStrValue.substring(0, aStrValue.length-1);
		            return aStrValue;

            }
	//This function vaildated the Email address that has been entered by the user.
function isEmail(aValue)
{

	/*	Modified Gopal, Take care of all kinds of validation in Email
		and It Will Accept . in between like a.b@SolutionSoftware.com
	*/
	var emailStr = mTrim(aValue);
		if (mTrim(emailStr)!='')
		{
			/* The following variable tells the rest of the function whether or not
			to verify that the address ends in a two-letter country or well-known
			TLD. 1 means check it, 0 means don't. */

			var checkTLD=1;

			/* The following is the list of known TLDs that an e-mail address must end with. */

			//var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/;
			var knownDomsPat=/^(COM|NET|ORG|EDU|INT|MIL|GOV|ARPA|BIZ|AERO|NAME|COOP|INFO|PRO|MUSEUM)$/;

			/* 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("The Email address is incorrect (check @ and .'s)");
			return false;
			}
			var user=matchArray[1];
			var domain=matchArray[2];

			// Start by checking that only basic ASCII characters are in the strings (0-127).

			for (i=0; i<user.length; i++)
			{
				if (user.charCodeAt(i)>127)
				{
				alert("The Email address contains invalid characters.");
				return false;
				}
			}
			for (i=0; i<domain.length; i++)
			{
				if (domain.charCodeAt(i)>127)
				{
					alert("The domain name contains invalid characters.");
					return false;
				}
			}

			// See if "user" is valid

			if (user.match(userPat)==null)
			{

			// user is not valid
			alert("The Email address '" + emailStr + "' 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("The Destination IP address is invalid.");
						return false;
					}
				}
				return true;
			}

			// Domain is symbolic name. Check if it's valid.

			var atomPat=new RegExp("^" + atom + "$");
			var domArr=domain.split(".");
			var len=domArr.length;
			for (i=0;i<len;i++)
			{
				if (domArr[i].search(atomPat)==-1)
				{
					alert("The domain name does not seem to be valid.");
					return false;
				}
			}

			/* domain name seems valid, but now make sure that it ends in a
			known top-level domain (like com, edu, gov) or a two-letter word,
			representing country (uk, nl), and that there's a hostname preceding
			the domain or country. */
			var upperDomain = domArr[domArr.length-1].toUpperCase();
			if (checkTLD && domArr[domArr.length-1].length!=2 &&
			upperDomain.search(knownDomsPat)==-1) {
			alert("The Email address must end in a well-known domain or two letter " + "country.");
			return false;
			}

			// Make sure there's a host name preceding the domain.

			if (len<2) {
			alert("The Email address is does not have a hostname!");
			return false;
			}

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