/*
 * author:addo zhang
 */

(function(){
    function $(id){
        return document.getElementById(id);
    }
    function setStyleDisplay(id,status){
        $(id).style.display=status;
    }
    function reply(comment_id,comment_author,textarea_id,reply_to,cancel){
        var str = '<a class="reply" href="#comment-'+comment_id+'">@';
        str += comment_author;
        str += '</a>';
        $(reply_to).innerHTML = ' to '+str.replace("@",'');
        $(cancel).innerHTML = '<input type="button" value="Cancel" onclick="Util.cancel(\''+reply_to+'\',\''+cancel+'\')"/>';
        $(textarea_id).focus();
    }
    function cancel(reply_to,cancel){
        $(reply_to).innerHTML = '';
        $(cancel).innerHTML = '';
    }
    function appendComment(reply_to,comment,reply_comment){
        var replyTo = $(reply_to).innerHTML;
        if(replyTo.length!=0){
            $(reply_comment).value = '@'+replyTo.replace('to ','')+'\n'+$(comment).value;
        }else {
            $(reply_comment).value = $(comment).value;
        }
    }
    function getRequestObject (url,options){
        //init request
        var req = false;
        if(window.XMLHttpRequest){
            var req = new Window.XMLHttpRequest();
        }else if(window.ActiveXObject){
            var req = new Window.ActiveXObject('Microsoft.XMLHTTP');
        }
        if(!req) return false;
    }

    window['Util'] = {};
    window['Util']['$']=$;
    window['Util']['reply']=reply;
    window['Util']['cancel']=cancel;
    window['Util']['appendComment']=appendComment;
    window['Util']['setStyleDisplay']=setStyleDisplay;
})();

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}