js read configuration file self-write

var fso = new ActiveXObject("");
var f = ("D:\\Useful Stuff\\Javascript\\",1);
var s = "";
while (!)
{
s+= ();
}
();

function getINI(item,key)
{
new RegExp("\\["+item+"\\](.+)").exec(s);
var str=RegExp.$1;
var reg2=/(\w+)=(\d+)/;
var keyValue={};
(reg2,function(a,b,c){
keyValue[b]=c;
});
return keyValue[key];
}
alert(getINI("data","up"));
alert(getINI("plugin_page_search","hightlight"));