Help Aligning Error Message right next to TextBox

Hi Guys

I would like to display the error message right next to the input textbox instead below the input textbox or above the input textbox, this the code. I've tried using the TAG but I had no luck, can any help with CSS

    

        

                  * Telephone:
   
        
       
                                                                                                                                                 
                                                                                                                     
        
    

What I mean, when the user keystroke the invalid numeric value for the phone the RegularExpressionValidator will catch it and throws an error message "Invalid Phone Number" and I would like the error message to be shown right next to the input textbox (txtVendorPhone).

Thanks