function chk_tell()
	{
		if(document.tell_a_friend.theirname.value=="")
		{
			alert("Please Enter Their Name !!!");
			document.tell_a_friend.theirname.focus();
			return false;
		}
		
		if(document.tell_a_friend.theiremailaddress.value=="")
		{
			alert("Please Enter Their Email ID !!!");
			document.tell_a_friend.theiremailaddress.focus();
			return false;
		}
		
		
		var checkEmail = "@.";
        var checkStr = tell_a_friend.theiremailaddress.value;
        var EmailValid = false;
        var EmailAt = false;
        var EmailPeriod = false;
        for (i = 0;  i < checkStr.length;  i++)
        {
        ch = checkStr.charAt(i);
        for (j = 0;  j < checkEmail.length;  j++)
        {
        if (ch == checkEmail.charAt(j) && ch == "@")
                EmailAt = true;
        if (ch == checkEmail.charAt(j) && ch == ".")
                EmailPeriod = true;
          if (EmailAt && EmailPeriod)
              break;
          if (j == checkEmail.length)
              break;
        }
        // if both the @ and . were in the string
        if (EmailAt && EmailPeriod)
        {
                EmailValid = true
                break;
        }
        }
        if (!EmailValid)
         {
                alert("The \"Email\" field must contain an \"@\" and a \".\".");
                document.tell_a_friend.theiremailaddress.focus();
                return false;
         } 
		 //End Of eamil validation
		 
		 
		 if(document.tell_a_friend.theiremailaddress_1.value!="")
		 {
			 	var checkEmail = "@.";
				var checkStr = tell_a_friend.theiremailaddress_1.value;
				var EmailValid = false;
				var EmailAt = false;
				var EmailPeriod = false;
				for (i = 0;  i < checkStr.length;  i++)
				{
				ch = checkStr.charAt(i);
				for (j = 0;  j < checkEmail.length;  j++)
				{
				if (ch == checkEmail.charAt(j) && ch == "@")
						EmailAt = true;
				if (ch == checkEmail.charAt(j) && ch == ".")
						EmailPeriod = true;
				  if (EmailAt && EmailPeriod)
					  break;
				  if (j == checkEmail.length)
					  break;
				}
				// if both the @ and . were in the string
				if (EmailAt && EmailPeriod)
				{
						EmailValid = true
						break;
				}
				}
				if (!EmailValid)
				 {
						alert("The \"Email\" field must contain an \"@\" and a \".\".");
						document.tell_a_friend.theiremailaddress_1.focus();
						return false;
				 } 
				 //End Of eamil validation
		}
		
		
		
		if(document.tell_a_friend.theiremailaddress_2.value!="")
		 {
			 	var checkEmail = "@.";
				var checkStr = tell_a_friend.theiremailaddress_2.value;
				var EmailValid = false;
				var EmailAt = false;
				var EmailPeriod = false;
				for (i = 0;  i < checkStr.length;  i++)
				{
				ch = checkStr.charAt(i);
				for (j = 0;  j < checkEmail.length;  j++)
				{
				if (ch == checkEmail.charAt(j) && ch == "@")
						EmailAt = true;
				if (ch == checkEmail.charAt(j) && ch == ".")
						EmailPeriod = true;
				  if (EmailAt && EmailPeriod)
					  break;
				  if (j == checkEmail.length)
					  break;
				}
				// if both the @ and . were in the string
				if (EmailAt && EmailPeriod)
				{
						EmailValid = true
						break;
				}
				}
				if (!EmailValid)
				 {
						alert("The \"Email\" field must contain an \"@\" and a \".\".");
						document.tell_a_friend.theiremailaddress_2.focus();
						return false;
				 } 
				 //End Of eamil validation
		}
		 
		/*if(document.tell_a_friend.yourname.value=="")
		{
			alert("Please Enter Your Name !!!");
			document.tell_a_friend.yourname.focus();
			return false;
		}
		
		if(document.tell_a_friend.youremailaddress.value=="")
		{
			alert("Please Enter Your Email ID !!!");
			document.tell_a_friend.youremailaddress.focus();
			return false;
		}*/
		
		
		
		if(document.tell_a_friend.youremailaddress.value!="")
		{
				var checkEmail = "@.";
				var checkStr = tell_a_friend.youremailaddress.value;
				var EmailValid = false;
				var EmailAt = false;
				var EmailPeriod = false;
				for (i = 0;  i < checkStr.length;  i++)
				{
				ch = checkStr.charAt(i);
				for (j = 0;  j < checkEmail.length;  j++)
				{
				if (ch == checkEmail.charAt(j) && ch == "@")
						EmailAt = true;
				if (ch == checkEmail.charAt(j) && ch == ".")
						EmailPeriod = true;
				  if (EmailAt && EmailPeriod)
					  break;
				  if (j == checkEmail.length)
					  break;
				}
				// if both the @ and . were in the string
				if (EmailAt && EmailPeriod)
				{
						EmailValid = true
						break;
				}
				}
				if (!EmailValid)
				 {
						alert("The \"Email\" field must contain an \"@\" and a \".\".");
						document.tell_a_friend.youremailaddress.focus();
						return false;
				 } 
				 //End Of eamil validation
		 }
		 
		
	}