function headerset(initshow) {
    var _now =document.getElementById(initshow);
    if (initshow !== "" && initshow !== undefined) {

        _now.className = "on";
        _now.style.display = "block";

    } else {
    _now.className = "";
    _now.style.display = "none";
    }
}
function headerset2(initshow) {
    var _now =frames["ihead"].document.getElementById(initshow);
    if (initshow !== "" && initshow !== undefined) {

        _now.className = "on";
        _now.style.display = "block";

    } else {
    _now.className = "";
    _now.style.display = "none";
    }
}

//通用图片处理大小，按宽度等比例缩小,type：不写是按宽度，高度；1：宽度；2：高度
function pic_resizer(picname, picwidth, picheight, type) {
   
    var pic_name = picname;
    var pic_width = picwidth;
    var pic_height = picheight;
    var vtype = null;
    if (type) {
        vtype = type;
    }
    var elpics = null;
    elpics = document.getElementById(pic_name);
    if (elpics == null) return;
    var image = new Image();
    image.onload = function() {
        if (this.width > pic_width || this.height > pic_height) {
            var rate1 = this.width / pic_width;
            var rate2 = this.height / pic_height;
            if (rate1 > rate2) {
                elpics.height = this.height * pic_width / this.width;
                elpics.width = pic_width;
            } else {
                elpics.width = this.width * pic_height / this.height;
                elpics.height = pic_height;
            }
        }
    };
    image.src = elpics.src;
}

//底下为ajax调用
//var loader1=new net.ContentLoader(url,ajaxlogincallback,onerrors,"POST",strParams);
var net=new Object();net.READY_STATE_UNINITIALIZED=0;net.READY_STATE_LOADING=1;net.READY_STATE_LOADED=2;net.READY_STATE_INTERACTIVE=3;net.READY_STATE_COMPLETE=4;
//多浏览器适应
net.ContentLoader=function(url,onload,onerror,method,params,contentType){this.req=null;this.onload=onload;this.onerror=(onerror) ? onerror : this.defaultError;this.loadXMLDoc(url,method,params,contentType);}
net.ContentLoader.prototype.loadXMLDoc=function(url,method,params,contentType){if (!method){method="GET";}if (!contentType && method=="POST"){contentType='application/x-www-form-urlencoded';}if (window.XMLHttpRequest){this.req=new XMLHttpRequest();}else if (window.ActiveXObject){this.req=new ActiveXObject("Microsoft.XMLHTTP");}if (this.req){try{var loader=this;this.req.onreadystatechange=function(){net.ContentLoader.onReadyState.call(loader);}
	this.req.open(method,url,true);if (contentType){this.req.setRequestHeader('Content-Type', contentType);}this.req.send(params);}catch (err){this.onerror.call(this);}}}
net.ContentLoader.onReadyState=function(){var req=this.req;var ready=req.readyState;if (ready==net.READY_STATE_COMPLETE){var httpStatus=req.status;if (httpStatus==200 || httpStatus==0){this.onload.call(this);}else{this.onerror.call(this);}}}
net.ContentLoader.prototype.defaultError=function(){alert("error fetching data!"+"\n\nreadyState:"+this.req.readyState+"\nstatus: "+this.req.status+"\nheaders: "+this.req.getAllResponseHeaders());}
function onerrors(){}