I want to change movie clip script to frame script

Thank Bro
I really thank to you :)

If xvel and yvel and xpos and ypos are constant values, then you can assign them outside of the onClipEvent calls.

The _x and _y properties need to be associated with an object, as in myMC._x = ...., even if they are still within the myMC object, you are better off indcating what they belong to (this._x, etc)

For the enter frame aspect, use the following for the frame version... where 'this' could be whatever object it is assigned for

this.onEnterFrame = function () {
// your repetitively active code
if(_y<ypos){
_y+=yvel;
}
if(_y>ypos){
_y-=yvel;
}
}