function IsNumeric(sText)
    {
       var ValidChars = "0123456789.";
       var IsNumber=true;
       var Char;

       for (i = 0; i < sText.length && IsNumber == true; i++) 
       { 
          Char = sText.charAt(i); 
          if (ValidChars.indexOf(Char) == -1) 
          {
             IsNumber = false;
          }
       }
       return IsNumber;
    }
    
    function IsDecimal(sText)
    {
        var digits="0123456789.";
        var IsDecimal= true ;
        var temp ;
        
        for (var i=0; i< sText.length && IsDecimal == true ; i++)
        {
           temp= sText.substring(i,i+1);
         
           if (digits.indexOf(temp)==-1)
           {
               IsDecimal = false ;
           }        
        }
        return IsDecimal;         
    }
    
    function ValidateSelectedDDL(ddlId, lblErrId, msg)
    {   
        if (ddlId.value == 0 )
        {
           lblErrId.innerHTML = msg ;
           return false ;
        }
        else 
        return true;
    }
      
    function ValidateEmptyText(text, lblErrId, msg )
    {
        if (text == "" )
        {
            lblErrId.innerHTML = msg ;
            return false ;     
        }
        else 
        {
            return true;
        }
    }
    
    function ValidateEqualValues(value1, value2, lblErrId , msg)
    {
        if (value1 != value2)
          {
             lblErrId.innerHTML = msg ;
             return false ; 
          }
          return true ;
    }
    
    function ValidateEmail(email, lblErrId, msg)
    {   
        var emailpat = /^([a-zA-Z0-9])+([\.a-zA-Z0-9_-])*@([a-zA-Z0-9])+(\.[a-zA-Z0-9_-]+)+$/;
        if (!emailpat.test(email))
        {
            lblErrId.innerHTML = msg ;
            return false ;
        }
        return true;
    }