add: img.setAttribute ("title", matchText); 
context: function insertEar (matchText, containerTag){    if (client.smileyText)        containerTag.appendChild (document.createTextNode (matchText));    var img = document.createElementNS ("http://www.w3.org/1999/xhtml",                                        "html:img");    img.setAttribute ("src", client.IMAGEDIR + "face-ear.gif");    containerTag.appendChild (img);    }
meta: 1567	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1567/b79ff7d7199534556a1951c04544a980c13a6146/static.js/clean/xul/content/static.js