GOAL : duplicate the value "on the fly" :<BR>
<BR>

<INPUT   Type=TEXT   Name=Text1   Value="Hello World..."   ><BR><BR>

<HR><BR>

<INPUT   Type=TEXT   Name=Text2   Value="Hello World..."   
   OnChange="Text1.value = this.value ;"
><BR>
...OnChange event occurs only once, when loosing focus !!<BR><BR>


<INPUT   Type=TEXT   Name=Text3   Value="Hello World..."   
   OnKeyDown="Text1.value = this.value ;"
><BR>
...OnKeyDown event BEFORE char is added ( and even when cursor is moved)<BR><BR>


<INPUT   Type=TEXT   Name=Text4   Value="Hello World..."   
   OnKeyPress="Text1.value = this.value ;"
><BR>...OnKeyPress event occurs for each new entered char, but BEFORE chars is added and not for suppress & delete keys<BR><BR>


<INPUT   Type=TEXT   Name=Text4   Value="Hello World..."   
   OnKeyUp="Text1.value = this.value ;"
><BR>
...OnKeyUp event IS USABLE FOR THE GOAL ( duplicating the value "on the fly" )