vbscript

Hi everyone,
  I used visual basicscript to design a message box as shown below-
     { <SCRIPT LANGUAGE = "VBscript">
        <!--
          sub btnButton_onClick
                 MsgBox "You are abuot to exit"
          end sub
          -->
        </SCRIPT>
         <FORM><INPUT NAME = "btnButton" Type ="BUTTON" VALUE="STATUS"></FORM>
    }
Now when I run this script, "VBscript"appears at the top/header of the message box.
How do I make the name of my document/web appear there instead of "VBscript".
                                                                                           Echezona


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