form表单中去掉默认的enter键提交并绑定js方法实现代码

<form id="index-search_form" method="post" >
<input type="text" id="s" value=""
onkeydown="javascript:if(event.keyCode==13) return false;"
onkeyup="javascript:if(event.keyCode==13) dosearch();"
class="swap_value" />
<img onclick="dosearch();"
src="${ctx }/MINIUI/scripts/miniui/themes/default/images/img/btn_search_box2.gif"
width="36" height="26" id="go" alt="Search" title="Search" />
</form>

function dosearch(){
var keywords=$("#s").val();
keywords=encodeURI(keywords);
keywords=encodeURI(keywords);
// window.open("${ctx}/DispatchAction.do?serviceName=SearchWeb&efFormEname=FS01&methodName=query&i-0-page=0&i-0-keywords="+keywords+"&i-0-moduleId=bmoa_badc");
location.href="${ctx}/DispatchAction.do?serviceName=SearchWeb&efFormEname=FS01&methodName=query&i-0-page=0&i-0-keywords="+keywords;
}