if ( t_h == "hide"||t_h == "show" )
equals(this.style.height.indexOf(f_h), 0, "Height must be reset to " + f_h + ": " + this.style.height);
if ( t_h == "hide"||t_h == "show" )
equals(this.style.height.indexOf(f_h), 0, "Height must be reset to " + f_h + ": " + this.style.height);