e=document.getElementsByTagName("TD");
for(k=15; k<e.length;k++) {
if(e[k].className=='posttdMessage') {
s=e[k].innerHTML;
while (s.indexOf('[marquee]') != -1){
s=s.replace('[marquee]','<marquee>'); s=s.replace('[/marquee]','</marquee>');
e[k].innerHTML=s;
} } }