javascript网页关键字高亮代码

//高亮网页关键字的javascript代码

var keys = [
             ["脚本",http://www.jb51.net,"#ff0000"],
             ["小说",http://www.kanshule.com,"#00ff00"],
             ["念经","http://www.baidu.com","#0000ff"],
             ["工会","http://www.baidu.com","#cc6600"]
           ]
var bookmark;
if（document.createRange）{
    var range = document.createRange（）;
}else{
    var range = document.body.createTextRange（）;
    bookmark = range.getBookmark（）;
}
var key;
for（var i = 0;key = keys[i];i++）{
    if（range.findText）{
        range.collapse（true）;
        range.moveToBookmark（bookmark）;
        while（range.findText（key[0]））{
            range.pasteHTML（range.text.fontcolor（key[2]））;
        }
    }else{
        var s,n;
        s = window.getSelection（）;
        s.collapse（document.body,0）;
        while（window.find（key[0]））{
            var n = document.createElement（"SPAN"）;
            n.style.color=key[2];
            s.getRangeAt（0）.surroundContents（n）;
        }
    }
}