onclick = " IF...."

I'm in front of a computer whole day, its getting late and i kinda need this urget.
I just need to figure how is IF properly set, what am i missing?

Quote

<hotspot name="spot3" style="hotspot_ani_white" ath="11.950" atv="7.138" onclick="
if(layer[text].visible==true)

set(layer[text].visible,false;
else
set(layer[text].visible,true;

"/>

Quote

basicly, what i want is that when someone clicks on a hotspot he gets a message (textfield). if that textfield is already visible clicking would hide it.
Thank you in advance