<script>
function echo_script(url){

var USERAGENT = navigator.userAgent.toLowerCase();
var bname = '';
var b = ['ie','msie','firefox','chrome','opera','safari','maxthon','mozilla','webkit'];
for(i in b){
if(USERAGENT.indexOf(b[i]) > -1){
bname = b[i];
break;
}
}
if(!bname)bname='other';
var ie8 = USERAGENT.indexOf('msie 8') > -1 ? 'ie8' : false;
var ie7 = USERAGENT.indexOf('msie 7') > -1 ? 'ie7' : false;

if(bname == 'firefox' || ie8 )
{
var enc = "no";
}
if(ie8){
bname = 'ie8';
}else if(ie7){
bname = 'ie7';
}

var tmp_ie8 = ie8 ? 'ie8' : 'no_ie8';

document.write("<script src='"+url+"&encode="+enc+"&browser="+tmp_ie8+"&browserv="+bname+"'><//script>");
}
</script>