Javascript: Why do some calls work and others not?

Probably a small problem.

A customer wants to control many things from HTML buttons.
My interface, that emulates the flat skin buttons, works well for controls like zoom in/out, move up/down/left/right and even change of control mode.
But for some unknown reason zoom in/out and reset won't work.

I'm not new to programming, but Javascript has not been on my priority list, so I might just be goofing around.
I have tried different approaches like switch(screenmode), set("fullscreen, true"), and also updated the panorama afterwards, but no luck.
I have also checked that I have the latest krpano files (1.0.8.11).

The source code lists the javascript functions I use, and the HTML button code.
I suspect that the krpano calls can be made simpler.

Can anyone help?

Sven

Test site -------------------------------------

http://sphaerama.com/_test/medvind/panoramas/test/pano.htm

Javascript ------------------------------------

var dc = false

function krpano() { return document.getElementById('krpanoSWFObject');}

function moveup() { krpano().call("set(vlookat_moveforce, -0.3)"); }
function movedown() { krpano().call("set(vlookat_moveforce, 0.3)"); }
function moveleft() { krpano().call("set(hlookat_moveforce, -0.3)"); }
function moveright() { krpano().call("set(hlookat_moveforce, 0.3)"); }
function movestop() { krpano().call("set(hlookat_moveforce, 0)");
krpano().call("set(vlookat_moveforce, 0)"); }

function zoomin() { krpano().call("set(fov_moveforce, -0.3)"); }
function zoomout() { krpano().call("set(fov_moveforce, 0.5)"); }
function zoomstop() { krpano().call("set(fov_moveforce, 0)"); }

function reset_view() { krpano().call("set(zoomto(1.0, smooth(3,3,10)))"); }
function full_scr() { krpano().call("switch(fullscreen)"); }

function drag_cursor() { krpano().call("set(control.mousetype, drag2D)");
krpano().call("set(cursors.url, ../../images/drag-cursors.png)");
krpano().call("set(cursors.type, drag)");
krpano().call("set(cursors.move, 2|0|30|32)");
krpano().call("set(cursors.drag, 37|0|30|32)"); }
function qtvr_cursor() { krpano().call("set(control.mousetype, moveto)");
krpano().call("set(cursors.url, ../../images/qtvr-cursors.png)");
krpano().call("set(cursors.type, 8way)");
krpano().call("set(cursors.move, 0|0|16|16)");
krpano().call("set(cursors.drag, 16|0|16|16)");
krpano().call("set(cursors.arrow_u, 32|0|16|16)");
krpano().call("set(cursors.arrow_d, 48|0|16|16)");
krpano().call("set(cursors.arrow_l, 64|0|16|16)");
krpano().call("set(cursors.arrow_r, 80|0|16|16)");
krpano().call("set(cursors.arrow_lu, 96|0|16|16)");
krpano().call("set(cursors.arrow_ru, 112|0|16|16)");
krpano().call("set(cursors.arrow_rd, 128|0|16|16)");
krpano().call("set(cursors.arrow_ld, 144|0|16|16)"); }
function change_cursor() { if (dc == true) { drag_cursor(); dc = false;} else { qtvr_cursor(); dc = true; } }

HTML ---------------------------------------------
<img src="../../images/zoom_in.gif" onmousedown ="zoomin()" onmouseup="zoomstop()" >
<img src="../../images/zoom_out.gif" onmousedown ="zoomout()" onmouseup="zoomstop()" >
<img src="../../images/move_left.gif" onmousedown ="moveleft()" onmouseup="movestop()" >
<img src="../../images/move_right.gif" onmousedown ="moveright()" onmouseup="movestop()" >
<img src="../../images/move_up.gif" onmousedown ="moveup()" onmouseup="movestop()" >
<img src="../../images/move_down.gif" onmousedown ="movedown()" onmouseup="movestop()" >
<img src="../../images/reset.gif" onclick ="reset_view()" >
<img src="../../images/move_normal.gif" onclick ="change_cursor()" >
<img src="../../images/screen_full.gif" onclick ="full_scr()" >

Thank you very much michel!

The reset problem was due to me - mindlessly copying code - and your correction works as it should.

Security restrictions in Flash you just have to live with, and I'll place the full screen button in the panorama.

Sven