javascript functions

hi....i use asp runner 6.0 build 766 and am facing sme problems in calling more than one javascript functions on the add page......
i have 4 fields in the table (Message,Templates,Charz,Count)

Templates field is a drop down field,Message is a textarea,Charz is a text area,Count is a text field
i use this piece of code on the add page html mode,to get the selected value from templates to message,its working perfectly.

[codebox]<script language=javascript>

document.forms.editform.value_Message.onchange=function()

{

document.forms.editform.value_Charz.value = document.forms.editform.value_Message.value;

}

</SCRIPT>[/codebox]

but i want is on evry keyup,keypress,keydown in the Charz field it should call a function...

pls can u tel me how i can add 2 or more functions on the add page html mode????????