//回车触发某按钮的单击事件
<input name="" type="text" class="input_search fl" id="searchkey" onkeydown="globelQuery(event);"/>
<div class="search_but fr" onclick="searchByKey()" id="globelSearch">搜索</div>
http://img.blog.csdn.net/20140227095828937?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvYmFpY3Az/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast
//搜索回车实现单击效果 //兼容 IE 火狐 谷歌
function globelQuery(e) {
if (!e)
e = window.event;
if ((e.keyCode || e.which) == 13) {
$("#globelSearch").click();
}
}