(function($){
    $.fn.qqFace=function(options){
        var defaults={id:'facebox',path:'wechat/',assign:'content',tip:'em_'};
        var option=$.extend(defaults,options);
        var assign=$('#'+option.assign);
        var id=option.id;
        var path=option.path;
        var tip=option.tip;
        if(assign.length<=0){alert('评论框丢失');return false;}
        $(this).click(function(e){
            var strFace,labFace;
            if($('#'+id).length<=0){
                strFace='<div id="'+id+'" style="position:absolute;right:0;left:0;bottom:40px;display:none;z-index:1000;" class="qqFace">'+'<table border="0" cellspacing="0" cellpadding="0" width="100%"><tr>';
                for(var i=100;i<=199;i++){
                    labFace='['+tip+i+']';
                    strFace+='<td><img src="'+path+i+'.gif" onclick="$(\'#'+option.assign+'\').setCaret();$(\'#'+option.assign+'\').insertAtCaret(\''+labFace+'\');" /></td>';
                    if((i-99)%15==0)strFace+='</tr><tr>';
                }
                strFace+='</tr></table></div>';
            }
            $(this).parent().append(strFace);
            // var offset=$(this).position();
            // var top=offset.top+$(this).outerHeight();
            // $('#'+id).css('top',top);
            // $('#'+id).css('left',offset.left);
            $('#'+id).show();
            e.stopPropagation();
        });
        $(document).click(function(){$('#'+id).hide();$('#'+id).remove();});
    };
})(jQuery);
jQuery.extend({
    unselectContents:function(){
        if(window.getSelection)window.getSelection().removeAllRanges();
        else if(document.selection) document.selection.empty();
    }
});
jQuery.fn.extend({
    selectContents:function(){
        $(this).each(function(i){
            var node=this;
            var selection,range,doc,win;
            if((doc=node.ownerDocument)&&(win=doc.defaultView)&&typeof win.getSelection!='undefined'&&typeof doc.createRange!='undefined'&&(selection=window.getSelection())&&typeof selection.removeAllRanges!='undefined'){
                range=doc.createRange();
                range.selectNode(node);
                if(i==0){selection.removeAllRanges();}
                selection.addRange(range);
            }else if(document.body&&typeof document.body.createTextRange!='undefined'&&(range=document.body.createTextRange())){
                range.moveToElementText(node);
                range.select();
            }
        });
    },
    setCaret:function(){
        if(!/msie/.test(navigator.userAgent.toLowerCase())) return;
        var initSetCaret=function(){
            var textObj=$(this).get(0);
            textObj.caretPos=document.selection.createRange().duplicate();
        };
        $(this).click(initSetCaret).select(initSetCaret).keyup(initSetCaret);
    },
    insertAtCaret:function(textFeildValue){
        var textObj=$(this).get(0);
        if(document.all&&textObj.createTextRange&&textObj.caretPos){
            var caretPos=textObj.caretPos;
            caretPos.text=caretPos.text.charAt(caretPos.text.length-1)==''?textFeildValue+'':textFeildValue;
        }else if(textObj.setSelectionRange){
            var rangeStart=textObj.selectionStart;
            var rangeEnd=textObj.selectionEnd;
            var tempStr1=textObj.value.substring(0,rangeStart);
            var tempStr2=textObj.value.substring(rangeEnd);
            textObj.value=tempStr1+textFeildValue+tempStr2;
            textObj.focus();
            var len=textFeildValue.length;
            textObj.setSelectionRange(rangeStart+len,rangeStart+len);
            textObj.blur();
        }else{
            textObj.value+=textFeildValue;
        }
    }
});