//   alert('validate');
    function isAlphabet(val)
    {
        var alphaExp = /^[a-zA-Z\s]+$/;
        var item = val;
        if(item.match(alphaExp))
        {
            return true;
        }else
        {
            return false;
        }
    }



    function isNumeric(num)
    {
        var numericExpression = /^[0-9]+$/;
        var item = num;
        if(item.match(numericExpression)){
	        return true;
        }else{
	        return false;
        }
    }
    
    function isTelephoneNumber(tel)
    {
        var numericExpression = /^[0-9]([\-]?[0-9]+)+[0-9]$/;
        var item = tel;
        if(item.match(numericExpression)){
	        return true;
        }else{
	        return false;
        }
    }    
    function isEmailAddress(emailadd)
    {
        var emailExp = /^([0-9a-zA-Z]([-.\w]*[0-9a-zA-Z])*@([0-9a-zA-Z][-\w]*[0-9a-zA-Z]\.)+[a-zA-Z]{2,4})$/;
        var email = emailadd;
        if(email.match(emailExp))
        {
            return true;
        }else
        {
            return false;
        }
    }
        
    function isDate(nID) {
        var RegExPattern = /^(?=\d)(?:(?:(?:(?:(?:0?[13578]|1[02])(\/|-|\.)31)\1|(?:(?:0?[1,3-9]|1[0-2])(\/|-|\.)(?:29|30)\2))(?:(?:1[6-9]|[2-9]\d)?\d{2})|(?:0?2(\/|-|\.)29\3(?:(?:(?:1[6-9]|[2-9]\d)?(?:0[48]|[2468][048]|[13579][26])|(?:(?:16|[2468][048]|[3579][26])00))))|(?:(?:0?[1-9])|(?:1[0-2]))(\/|-|\.)(?:0?[1-9]|1\d|2[0-8])\4(?:(?:1[6-9]|[2-9]\d)?\d{2}))($|\ (?=\d)))?(((0?[1-9]|1[012])(:[0-5]\d){0,2}(\ [AP]M))|([01]\d|2[0-3])(:[0-5]\d){1,2})?$/;
        if ((nID.match(RegExPattern)) && (nID!=''))
    		{
              	return true;
        	} 
        else 
        	{
           		return false;
  		} 
      }