document.onkeydown=keydown;
function keydown(e){
    var e = e||event;
    var currKey = e.keyCode||e.which||e.charCode;
    if(e.ctrlKey && 13==currKey){
       	var sel=(document.getSelection)?document.getSelection():document.selection.createRange().text;
        if(sel==""){
            alert('请先用鼠标选择出错的内容片断！');
        }else{
            
            post('report.aspx',{url:location,content:sel});
        }
    }
}

function post(url,param){
    var tmpForm = document.createElement('form');
    tmpForm.id = "frm_report";
    tmpForm.action = url;
    tmpForm.method='post';
    tmpForm.target="_blank";
    tmpForm.style.display='none';
    for(var x in param){
        var child=document.createElement('textarea');
        child.name=x;
        child.value=param[x];
        tmpForm.appendChild(child);
    }
    document.body.appendChild(tmpForm);
    tmpForm.submit();
    return tmpForm;
}