var bktconst_root= 'http://bkt.zingersaga.net/'; // include '/' at last

var s=document.createElement('script');
s.setAttribute('id','bktscript_s');
s.setAttribute('src',bktconst_root + 'bkt/js/dict3core.js');
document.getElementsByTagName('body')[0].insertBefore(s,document.getElementsByTagName('body')[0].firstChild);

var bkt_css = document.createElement('link');
bkt_css.setAttribute('rel','stylesheet');
bkt_css.setAttribute('type','text/css');
bkt_css.setAttribute('href', bktconst_root + 'bkt/css/dict3.css'); 
document.getElementsByTagName('head')[0].insertBefore(bkt_css, document.getElementsByTagName('head')[0].firstChild);

var bkt_cache= document.createElement("div");
bkt_cache.style.display = "none";
bkt_cache.innerHTML = "<img src='" + bktconst_root + "bkt/images/lock.png'><img src='" + bktconst_root + "bkt/images/plus.png'><img src='" + bktconst_root + "bkt/images/loading.gif'>"; 

document.getElementById('click2refer_script').innerHTML = '<div style="border: 1px dotted black;width:370px;text-align:center;background-color:yellow;">\
<b style="margin:5px;"><img src="http://bkt.zingersaga.net/bkt/images/pin.png" alt="" />\
 You can double click on any word to get its meaning </b></div>';

document.getElementsByTagName('body')[0].insertBefore( bkt_cache, document.getElementsByTagName('body')[0].firstChild);