cross-leg script

i'm making a pillow with a torus shape. the dimple is pointing straight up and down (Z). my problem is: i'm putting a cross-leg sit script in the pillow, but i can't figure out how to get me to sit straight up with this script. the pillow shape is turned on it's side (in order to have the dimple pointing up), but the script is obviously set for a prim that is not turned on it's side. Here's the script. What do i have to do to make me sit straight up on a torus dimple, huh?

script:

key avatar;
vector pos = <-0.25,0,0.8>; //adjust the position to fit object -must be
//nonzero in at least one direction or script will not work!
rotation rot = <0,0,0,0>; //adjust rotation (1 in any vector gives 90 deg)

default
{
state_entry()
{
llSitTarget(pos, rot);
}
changed(integer change)
{
avatar = llAvatarOnSitTarget();
if(change & CHANGED_LINK)
{
if(avatar == NULL_KEY)
{
// You have gotten off
llStopAnimation("sit_ground";
llReleaseControls();
llResetScript();
}
else if(avatar == llAvatarOnSitTarget())
{
// You have gotten on
llRequestPermissions(avatar,PERMISSION_TRIGGER_ANIMATION );
}
}
}
run_time_permissions(integer perms)
{
if(perms)
{
llStopAnimation("sit";
llStartAnimation("sit_ground";
}
else
{
llUnSit(avatar);
}
}
}

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That comment about "1 in any vector gives 90 deg" is bogus. That would actually be a 180 degree rotation about the axis. A 90 degree rotation about one of the primary axis looks like:

x-axis: <0.707107, 0.0, 0.0, 0.707107>
(-x)-axis: <-0.707107, 0.0, 0.0, 0.707107>


y-axis: <0.0, 0.707107, 0.0, 0.707107>
(-y)-axis: <0.0, -0.707107, 0.0, 0.707107>


z-axis: <0.0, 0.0, 0.707107, 0.707107>
(-z)-axis: <0.0, 0.0, -0.707107, 0.707107>

If the axis of rotation is u, a quaternion rotation of theta about that axis is:

< u.x * llSin(theta/2.0), u.y * llSin(theta/2.0), u.z * llSin(theta/2.0), llCos(theta/2.0) >

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