基于jquery的网页SELECT下拉框美化代码_jquery

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(function($){
function hideOptions(speed){
if(speed.data){speed=speed.data}
if($(document).data("nowselectoptions"))
{
$($(document).data("nowselectoptions")).slideUp(speed);
$($(document).data("nowselectoptions")).prev("div").removeClass("tag_select_open");
$(document).data("nowselectoptions",null);
$(document).unbind("click",hideOptions);
$(document).unbind("keyup",hideOptionsOnEscKey);
}
}
function hideOptionsOnEscKey(e){
var myEvent = e || window.event;
var keyCode = myEvent.keyCode;
if(keyCode==27)hideOptions(e.data);
}
function showOptions(speed){
$(document).bind("click",speed,hideOptions);
$(document).bind("keyup",speed,hideOptionsOnEscKey);
$($(document).data("nowselectoptions")).slideDown(speed);
$($(document).data("nowselectoptions")).prev("div").addClass("tag_select_open");
}

$.fn.selectCss=function(_speed){
$(this).each(function(){
var speed=_speed||"fast";
if($(this).data("cssobj")){
$($(this).data("cssobj")).remove();
}
$(this).hide();
var divselect = $("").insertAfter(this).addClass("tag_select");
$(this).data("cssobj",divselect);
var divoptions = $("

").insertAfter(divselect).addClass("tag_options").hide();
divselect.click(function(e){
if($($(document).data("nowselectoptions")).get(0) != $(this).next("ul").get(0)){
hideOptions(speed);
}
if(!$(this).next("ul").is(":visible"))
{
e.stopPropagation();
$(document).data("nowselectoptions",$(this).next("ul"));
showOptions(speed);
}
});
divselect.hover(function(){
$(this).addClass("tag_select_hover");
}
,
function(){
$(this).removeClass("tag_select_hover");
});
$(this).change(function(){
$(this).nextAll("ul").children("li:eq("+ $(this)[0].selectedIndex +")").addClass("open_selected").siblings().removeClass("open_selected");
$(this).next("div").html($(this).children("option:eq("+ $(this)[0].selectedIndex +")").text());
});
$(this).children("option").each(function(i){
var lioption= $("

").html($(this).text()).attr("title",$(this).attr("title")).appendTo(divoptions);
if($(this).attr("selected")){
lioption.addClass("open_selected");
divselect.html($(this).text());
}
lioption.data("option",this);
lioption.click(function(){
lioption.data("option").selected=true;
$(lioption.data("option")).trigger("change",true)
});
lioption.hover(
function(){$(this).addClass("open_hover");},
function(){ $(this).removeClass("open_hover"); }
);
});
});
}
})(jQuery);

.tag_select{display:block;color:#000;width:179px;height:23px;background:transparent url("images/index_22.jpg") no-repeat 0 0;padding:0 10px;line-height:23px; color:#7D7D7D; font-size:12px; cursor:pointer}
.tag_select_hover{ color:#ff0000; background:transparent url("selectbg.jpg") no-repeat 0 0; }
.tag_select_open{ color:#0000ff; background:transparent url("selectbg.jpg") no-repeat 0 0;}
ul.tag_options{position:absolute;margin:0;list-style:none;background:#fff;padding:0 0 1px;margin:0;width:162px ; height:100px; overflow:hidden; overflow-y:auto; font-size:12px; margin-left:10px; cursor:pointer; z-index:1000 }
ul.tag_options li{background:#fff; display:block;width:140px;padding:0 10px;height:20px;text-decoration:none;line-height:20px;color:#000; font-weight:normal; font-size:12px}
ul.tag_options li.open_hover{background:#0000ff;color:#000; font-weight:normal; font-size:12px}
ul.tag_options li.open_selected{background:#ccc; font-size:12px;font-weight:bold; }