enter键提交

document.onkeydown = function(e){
        if(!e) e = window.event;//火狐中是 window.event
        if((e.keyCode || e.which) == 13){
            var obtnSearch=document.getElementById("ctl00_ContentPlaceHolder1_btn_Save_E0")
            obtnSearch.focus();//让另一个控件获得焦点就等于让文本输入框失去焦点
            obtnSearch.click();
        }
    }