add: if (!slt.lt) return; 
context:   init: function() {    slt.lt = document.getElementById('linktrail');    /* Try and add links, in case we've just resized the       window to be bigger */    var canContinue = true;    while (canContinue &&          (slt.findRightEdge() < document.body.offsetWidth)) {      canContinue = slt.addLinktrailElement();    }    /* Now remove links until the linktrail is narrower than       the window */    canContinue = true;    while (canContinue &&          (slt.findRightEdge() > document.body.offsetWidth)) {      canContinue = slt.removeLinktrailElement();    }  },
meta: 1301	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1301/3601f224d4280da1aff6a6fb4eace22803f793e8/yelp.js/buggy/data/yelp.js