simple line animation

[digitaljohnjohn]

hello i wanna do i simple line animation starts off small then streches the length of my project window sort of like drawing a straight line with a pencil. my begining and endframes are graphic symbols when i tween it doesnt work any help would be appreciated

[2peachy]

this is my line animation with actionScripting that I used for a site.... perhaps you can modify it to suit your needs.

// Draw a line and move it across the stage under the title to create sort of an animation
with(_root.createEmptyMovieClip("holder", 1)){
lineStyle(1, 0xCCCCCC, 100);
moveTo(0,125);
newX=0;
newY=125;
speed = 5
onEnterFrame = function(){
if(_parent.newX <= 175 && _parent.newY == 125){
_parent.newX +=_parent.speed;
lineTo(_parent.newX, _parent.newY);
}else{
if(_parent.newY <= 200){
_parent.newY +=_parent.speed;
lineTo(_parent.newX, _parent.newY);
}else{
if(_parent.newX <380){
_parent.newX +=_parent.speed;
lineTo(_parent.newX,_parent.newY);
}
}
}
}
}

stop();