problems using slider by onlick movement @ie

problems using slider by onlick movement @ie


hello out there,
i got some problem using jquery slider with ie6 / 7 by onclick actions
before dragging the slider;
in firefox (like almost) everything is fine:
I init a slider like this:
$("#DOMID”).slider({slide:actualNewsboxHeight,change:function(){}});
I got 2 buttons, to move the slider by onclick, something like this:
$("#”DOMID”).slider('moveTo',”=+10”);
the ie calls an error at this point:
if(set)elem[name]=value;
BUT: if I drag the slider first, everything is fine.
thanks a lot,
best regards,
server.