The tex2math plugin will insert the <SPAN> and <DIV> tags automatically for you. It searches for \(...\) and \[...\], or $...$ and $$...$$, or any strings you want. Right after loading jsMath.js, add: <SCRIPT> jsMath.Setup.Script("plugins/tex2math.js") </SCRIPT> Before calling jsMath.Process(), add: <SCRIPT> jsMath.ConvertTeX() </SCRIPT>