function Only_CharacterCheck(strCharacter)
		{
			for (k=0;k<strCharacter.length;k++)
			{
				c = strCharacter.charAt(k);
				if (!(((c>='A' && c<='Z') || (c>='a' && c<='z')||(c==' ') ||(c=='.'))))
						return false;
			}
			return true;
		}

function Validateon(val1,val2,val3,val4)
		{
	
		var txtName=val1;
		var Text1=val2;
		var Text2=val3;
		var Text3=val4;
		
			
		if (Check("txtName","your name") == false)
	        return false;	    
	    else if (Only_CharacterCheck(document.getElementById("txtName").value) == false)
	    {
	        alert("Please enter valid character");
	        document.getElementById("txtName").value = "";
	        document.getElementById("txtName").focus();
	        return false;
	    }
	    if (Check("txtEmail","your email") == false)
	        return false;	    
	    else if (Email_Check(document.getElementById("txtEmail").value) == false)
	    {
	        alert("Please enter valid email");
	        document.getElementById("txtEmail").value = "";
	        document.getElementById("txtEmail").focus();
	        return false;
	    }
	    if (Check("txtPhone","your phone") == false)
	        return false;	    
	    else if (Phone_Check(document.getElementById("txtPhone").value) == false)
	    {
	        alert("Please enter valid number");
	        document.getElementById("txtPhone").value = "";
	        document.getElementById("txtPhone").focus();
	        return false;
	    }
	    
	    if (Check("txtQuest","your questions") == false)
	        return false;	    
	    else if (CheckCharacter(document.getElementById("txtQuest").value) == false)
	    {
	        alert("Please enter valid message");
	        document.getElementById("txtQuest").value = "";
	        document.getElementById("txtQuest").focus();
	        return false;
	    }
	    
	   
	    
    	window.location.href="MailHelper.aspx?&N=" + val1 + "&E=" + val2 + "&T=" + val3 + "&M=" + val4;
}

function Reset()
		{
			document.getElementById("txtName").value = "";
			document.getElementById("txtEmail").value = "";
			document.getElementById("txtPhone").value = "";
			document.getElementById("txtQuest").value = "";			
		}


function CheckCharacter(strCharacter)
	{
			for (k=0;k<strCharacter.length;k++)
			{
				c = strCharacter.charAt(k);
				if (!((c>='A' && c<='Z') || (c>='a' && c<='z') || (c>='0' && c<='9') || (c==" ") || (c=="-") || (c==13)))
					return false;
			}
			return true;
	}		

function Phone_Check(strCharacter)
		{
		for (k=0;k<strCharacter.length;k++)
		{
			c = strCharacter.charAt(k);
			if (!((c>='0' && c<='9') || (c=='-') || (c==" ") || (c=="(") || (c==")")))
				return false;
		}
		return true;
		}  
		

 

 function Check(control,str)
	{
	    if (document.getElementById(control).value == 0)
	    {
	        alert("Please enter " + str);
	        document.getElementById(control).value = "";
	        document.getElementById(control).focus();
	        return false;
	    }
	    return true;
	}

function Email_Check(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;
}