How to climb a ladder?

[theherotom]

How can I make it so that my character climbs a ladder whilst holding the down button? I attached a sample of my project for someone to help me with

Thanks in advanced

code:

onClipEvent (load) {
var ground:MovieClip = _root.ground;
var grav:Number = 0;
var gravity:Number = 2;
var speed:Number = 7;
var maxJump:Number = -12;
var touchingGround:Boolean = false;

}
onClipEvent (enterFrame) {
_y += grav;
grav += gravity;
while (ground.hitTest(_x, _y, true)) {
_y -= gravity;
grav = 0;
}
if (ground.hitTest(_x, _y+5, true)) {
touchingGround = true;

} else {
touchingGround = false;

}
if (Key.isDown(Key.RIGHT)) {
_x += speed;
}
if (Key.isDown(Key.LEFT)) {
_x -= speed;
}
if (Key.isDown(Key.UP) && touchingGround) {
grav = maxJump;
}
if (Key.isDown(Key.DOWN)) {
if(ladder.hitTest(this)){
grav = 0;
_x += speed;

}
if (ground.hitTest(_x+(_width/2), _y-(_height/2), true)) {
_x -= speed;
}
if (ground.hitTest(_x-(_width/2), _y-(_height/2), true)) {
_x += speed;
}
if (ground.hitTest(_x, _y-(height), true)) {
grav = 3;
}
}
}

[Sethfx]

Well create a movie clip of a ladder and make it when your character hits that movie clip to turn the gravity off. and use

if(Key.isDown(Key.DOWN)) { 
_y += speed;
}

to descend down the ladder.

[theherotom]

That's exactly what it is like atm... doesn't work.