riEnabled class automatically add when i mouse hover

[DownTown]

Hi,

 

In my code after ajax call i have to show dynamic error message thats why i am adding "riError" class.

 

 $("#VersionTxt").addClass("riError");

Its successfully added to input text box. but when i hover my mouse on this textbox then red color of textbox and tool tip got removed and some "riEnabled" class append dynamically.

 

Please provide me the solution and how to show dynamuic error message.