rem: element.innerHTML = '<SPAN CLASS="normal" STYLE="position:absolute; top:0;left:0;"></SPAN>'; 
add: element.innerHTML = '<SPAN CLASS="normal" STYLE="position:absolute; top:0px;left:0px;"></SPAN>' + jsMath.Browser.operaHiddenFix; 
context:   ResetHidden: function (element) {    element.innerHTML = '<SPAN CLASS="normal" STYLE="position:absolute; top:0;left:0;"></SPAN>';    element.className='';    jsMath.hidden = element.firstChild;    jsMath.ReInit();  },
meta: 7708	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/7708/39e543f846ebf9878a2a39accded2b2539adb909/jsMath.js/clean/htdocs/jsMath/jsMath.js