function loadjscssfile(filename,filetype){
    if(filetype == "js"){
        var fileref = document.createElement('script');
        fileref.setAttribute("type","text/javascript");
        fileref.setAttribute("src",filename);
        fileref.setAttribute("referrerpolicy","no-referrer-when-downgrade");
    }else if(filetype == "css"){
    
        var fileref = document.createElement('link');
        fileref.setAttribute("rel","stylesheet");
        fileref.setAttribute("type","text/css");
        fileref.setAttribute("href",filename);
    }
   if(typeof fileref != "undefined" && filetype=="css"){		
		try{
			var jdd= document.getElementsByTagName("head")[0].firstChild
			if(jdd!=null)
			{
				document.getElementsByTagName("head")[0].insertBefore(fileref,jdd )
			}		
		}catch(ex){
			document.getElementsByTagName("head")[0].appendChild(fileref);
		}
		
    }
	else if(typeof fileref != "undefined"){
		document.getElementsByTagName("body")[0].appendChild(fileref);
	}
}
function cssLoad(){
    var thislinkk="";
    var IsMobileVs=false;
    try {
        if ((navigator.userAgent.match(/(phone|pad|pod|iPhone|iPod|ios|iPad|Android|Mobile|BlackBerry|IEMobile|MQQBrowser|JUC|Fennec|wOSBrowser|BrowserNG|WebOS|Symbian|Windows Phone)/i))) {
            IsMobileVs=true;
        }
    }
    catch (e) {
    }      
	    thislinkk= "//chat.chem17.com/Content/css/exchange_new_2.css?v=20231213001";
        //金色的邀请框又衍生出一种 在手机端中没有这个头部要引用3才行  默认是2
        if(IsMobileVs){
            var hasMobileLayue=false;
            var metacount= window.document.getElementsByTagName("meta").length;
            for (var i = 0; i < metacount; i++) {
                if(window.document.getElementsByTagName("meta")[i].name=="viewport")
                {
                   hasMobileLayue=true;
                }
            }
            if(!hasMobileLayue){
                thislinkk= "//chat.chem17.com/Content/css/exchange_new_3.css?v=20211124001";
            }
         } 
    loadjscssfile(thislinkk,"css");
}

function jsLoad() {
     var IsMobileVs = false;
     try {
         if ((navigator.userAgent.match(/(phone|pad|pod|iPhone|iPod|ios|iPad|Android|Mobile|BlackBerry|IEMobile|MQQBrowser|JUC|Fennec|wOSBrowser|BrowserNG|WebOS|Symbian|Windows Phone)/i))) {
             IsMobileVs = true;
         }
     } catch (e) {
     }
     if (typeof (jQuery) == 'undefined') {
         loadjscssfile("//chat.chem17.com/Content/js/jquery-1.8.3.min.js", "js");
     }
     //如果不是手机站 ；如果是手机站，不加载中间框，只加载小图标 
     if (!IsMobileVs && "KfCenterBox" != "KfCenterBox" && "chat.chem17.com" != "chat.chem17.com") {
         //不加载小图标
     }
     else if (!IsMobileVs && "KfCenterBox" == "KfCenterBox") {
         loadjscssfile("//chat.chem17.com/chat/KfCenterBoxShow/384546", "js");
     }
     else if (IsMobileVs && "KfCenterBox" == "KfCenterBox") {
         //不加载
     } else {
         loadjscssfile("//chat.chem17.com/chat/KfCenterBoxShow/384546", "js");
     }
 }

setTimeout(cssLoad, 10); //金色样式中包含异步判断meta 样式级别最高 会覆盖页面上已有样式
setTimeout(jsLoad, 300);