求高手帮忙解决个JS和jQuery的冲突问题，谢过
以下这段是一个美化select下拉框的代码，其中美元符号和jQuery冲突了，有比较好的解决方法吗


var selects = document.getElementsByTagName('select');
var isIE = (document.all && window.ActiveXObject && !window.opera) ? true : false;


function $(id) {
return document.getElementById(id);
}
function stopBubbling (ev) {
ev.stopPropagation();
}
function rSelects() {
for (i=0;i<selects.length;i++){
selects[i].style.display = 'none';
select_tag = document.createElement('div');
select_tag.id = 'select_' + selects[i].name;
select_tag.className = 'select_box';
selects[i].parentNode.insertBefore(select_tag,selects[i]);
select_info = document.createElement('div');
select_info.id = 'select_info_' + selects[i].name;
select_info.className='tag_select';
select_info.style.cursor='pointer';
select_tag.appendChild(select_info);
select_ul = document.createElement('ul');
select_ul.id = 'options_' + selects[i].name;
select_ul.className = 'tag_options';
select_ul.style.position='absolute';
select_ul.style.display='none';
select_ul.style.zIndex='999';
select_tag.appendChild(select_ul);
rOptions(i,selects[i].name);
mouseSelects(selects[i].name);
if (isIE){
selects[i].onclick = new Function("clickLabels3('"+selects[i].name+"');window.event.cancelBubble = true;");
}
else if(!isIE){
selects[i].onclick = new Function("clickLabels3('"+selects[i].name+"')");
selects[i].addEventListener("click", stopBubbling, false);
}
}
}

function rOptions(i, name) {
var options = selects[i].getElementsByTagName('option');
var options_ul = 'options_' + name;
for (n=0;n<selects[i].options.length;n++){
option_li = document.createElement('li');
option_li.style.cursor='pointer';
option_li.className='open';
$(options_ul).appendChild(option_li);

option_text = document.createTextNode(selects[i].options[n].text);
option_li.appendChild(option_text);

option_selected = selects[i].options[n].selected;

if(option_selected){
option_li.className='open_selected';
option_li.id='selected_' + name;
$('select_info_' + name).appendChild(document.createTextNode(option_li.innerHTML));
}

option_li.onmouseover = function(){ this.className='open_hover';}
option_li.onmouseout = function(){