diff --git a/avalon.js b/avalon.js
index d814a545e..9f284835a 100644
--- a/avalon.js
+++ b/avalon.js
@@ -1706,13 +1706,13 @@
                     fixVML(el)
                 }
             }
-            if (tag === "tr") {
-                for (els = wrapper.children, i = 0; el = els[i++]; ) {
-                    // IE6-8,如果动态生成tr元素，必须会在后面添加早已废弃caption的标签，其nodeName,innerHTML都为""
-                    if (el.nodeName === "") {
-                        el.parentNode.removeChild(el)
-                        i--
-                    }
+        }
+        if (DOC.createStyleSheet && tag === "tr") {
+            for (els = wrapper.children, i = 0; el = els[i++]; ) {
+                // IE6-9,如果动态生成tr元素，必须会在后面添加早已废弃caption的标签，其nodeName,innerHTML都为""
+                if (el.nodeName === "") {
+                    el.parentNode.removeChild(el)
+                    i--
                 }
             }
         }
diff --git a/avalon.min.js b/avalon.min.js
index 53f345eda..fe71ce235 100644
--- a/avalon.min.js
+++ b/avalon.min.js
@@ -44,7 +44,7 @@ arguments.length&&void 0===b)return this;var c=this,d=arguments;return function(
 b.childNodes)for(var d=b.childNodes,e=0,f;f=d[e++];)if(f.tagName){var g=p.createElementNS("http://www.w3.org/2000/svg",f.tagName.toLowerCase());L.forEach.call(f.attributes,function(b){g.setAttribute(b.name,b.value)});Ka(f,g);c.appendChild(g)}};Object.defineProperties(SVGElement.prototype,{outerHTML:{enumerable:!0,configurable:!0,get:$a,set:function(b){var c=this.tagName.toLowerCase(),d=this.parentNode;b=avalon.parseHTML(b);"svg"===c?d.insertBefore(b,this):(c=p.createDocumentFragment(),Ka(b,c),d.insertBefore(c,
 this));d.removeChild(this)}},innerHTML:{enumerable:!0,configurable:!0,get:function(){var b=RegExp("</"+this.nodeName+">$","i");return this.outerHTML.replace(RegExp("<"+this.nodeName+'\\b(?:(["\'])[^"]*?(\\1)|[^>])*>',"i"),"").replace(b,"")},set:function(b){avalon.clearHTML&&(avalon.clearHTML(this),b=avalon.parseHTML(b),Ka(b,this))}}})}}!B.outerHTML&&r.HTMLElement&&HTMLElement.prototype.__defineGetter__("outerHTML",$a);var P,Q,aa,Mb,vb,Nb=/[-.*+?^${}()|[\]\/\\]/g,D=y,U={loader:function(b){r.define=
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-U;u.plugins.interpolate(["{{","}}"]);u.paths={};u.shim={};u.maxRepeatSize=100;avalon.config=u;var cb={_toString:function(){var b=this.node.className;return("string"===typeof b?b:b.baseVal).split(/\s+/).join(" ")},_contains:function(b){return-1<(" "+this+" ").indexOf(" "+b+" ")},_add:function(b){this.contains(b)||this._set(this+" "+b)},_remove:function(b){this._set((" "+this+" ").replace(" "+b+" "," ").trim())},__set:function(b){var c=this.node;"string"===typeof c.className?c.className=b:c.setAttribute("class",
+U;u.plugins.interpolate(["{{","}}"]);u.paths={};u.shim={};u.maxRepeatSize=100;avalon.config=u;var cb={_toString:function(){var b=this.node.className;return("string"===typeof b?b:b.baseVal).split(/\s+/).join(" ")},_contains:function(b){return-1<(" "+this+" ").indexOf(" "+b+" ")},_add:function(b){this.contains(b)||this._set(this+" "+b)},_remove:function(b){this._set((" "+this+" ").replace(" "+b+" "," "))},__set:function(b){b=b.trim();var c=this.node;"string"===typeof c.className?c.className=b:c.setAttribute("class",
 b)}};"add,remove".replace(z,function(b){avalon.fn[b+"Class"]=function(c){var d=this[0];c&&("string"===typeof c&&d&&1===d.nodeType)&&c.replace(/\S+/g,function(c){bb(d)[b](c)});return this}});avalon.fn.mix({hasClass:function(b){var c=this[0]||{};return 1===c.nodeType&&bb(c).contains(b)},toggleClass:function(b,c){for(var d,e=0,f=b.split(/\s+/),g="boolean"===typeof c;d=f[e++];)this[(g?c:!this.hasClass(d))?"addClass":"removeClass"](d);return this},attr:function(b,c){return 2===arguments.length?(this[0].setAttribute(b,
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 b,c);return void 0!==e?e:this},position:function(){var b,c,d=this[0],e={top:0,left:0};if(d)return"fixed"===this.css("position")?c=d.getBoundingClientRect():(b=this.offsetParent(),c=this.offset(),"HTML"!==b[0].tagName&&(e=b.offset()),e.top+=avalon.css(b[0],"borderTopWidth",!0),e.left+=avalon.css(b[0],"borderLeftWidth",!0)),{top:c.top-e.top-avalon.css(d,"marginTop",!0),left:c.left-e.left-avalon.css(d,"marginLeft",!0)}},offsetParent:function(){for(var b=this[0].offsetParent||B;b&&"HTML"!==b.tagName&&
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 [0,""]:[1,"X<div>"]};E.optgroup=E.option;E.tbody=E.tfoot=E.colgroup=E.caption=E.thead;E.th=E.td;"circle,defs,ellipse,image,line,path,polygon,polyline,rect,symbol,text,use".replace(z,function(b){E[b]=E.g});var Rc=/<([\w:]+)/,Sc=/<(?!area|br|col|embed|hr|img|input|link|meta|param)(([\w:]+)[^>]*)\/>/ig,Qb=w?/[^\d\D]/:/(<(?:script|link|style|meta|noscript))/ig,Tc=M(["","text/javascript","text/ecmascript","application/ecmascript","application/javascript"]),Uc=/<(?:tb|td|tf|th|tr|col|opt|leg|cap|area)/,
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+avalon.parseExprProxy=K;var Ra={"accept-charset":"acceptCharset","char":"ch",charoff:"chOff","class":"className","for":"htmlFor","http-equiv":"httpEquiv"};"accessKey,bgColor,cellPadding,cellSpacing,codeBase,codeType,colSpan,dateTime,defaultValue,frameBorder,longDesc,maxLength,marginWidth,marginHeight,rowSpan,tabIndex,useMap,vSpace,valueType,vAlign".replace(z,function(b){Ra[b.toLowerCase()]=b});var pa=J.insertBefore(document.createElement("avalon"),J.firstChild);pa.innerHTML="X<style id='avalonStyle'>.avalonHide{ display: none!important }</style>";
+var gd=/<noscript.*?>(?:[\s\S]+?)<\/noscript>/img,hd=/<noscript.*?>([\s\S]+?)<\/noscript>/im,Sa=function(){return new (r.XMLHttpRequest||ActiveXObject)("Microsoft.XMLHTTP")},fa=function(b,c,d){if(b=b.getAttribute(c)){c=0;for(var e;e=d[c++];)if(e.hasOwnProperty(b)&&"function"===typeof e[b])return e[b]}},Ta=avalon.templateCache={};avalon.contains=Za;var Ua={};"autofocus,autoplay,async,allowTransparency,checked,controls,declare,disabled,defer,defaultChecked,defaultSelectedcontentEditable,isMap,loop,multiple,noHref,noResize,noShade,open,readOnly,selected".replace(z,
 function(b){Ua[b.toLowerCase()]=b});var Fa=avalon.bindingExecutors={attr:function(b,c,d){var e=d.type,f=d.param;if("css"===e)avalon(c).css(f,b);else if("attr"===e){if(Ua[f]&&(e=Ua[f],"boolean"===typeof c[e]))return c[e]=!!b;!w&&Ra[f]&&(f=Ra[f]);if(!1===b||null===b||void 0===b)return c.removeAttribute(f);(Ib.test(c)?0:p.namespaces&&gb(c)||f in c.cloneNode(!1))?c[f]=b:c.setAttribute(f,b)}else if("include"===e&&b){var g=d.vmodels,h=d.includeRendered,k=d.includeLoaded,l=d.includeReplaced?c.parentNode:
 c;g.cb(1);var m=function(b){k&&(b=k.apply(l,[b].concat(g)));for(h&&qa(l,function(){h.call(l)},NaN);;){var c=d.startInclude.nextSibling;if(c&&c!==d.endInclude)l.removeChild(c);else break}b=avalon.parseHTML(b);c=avalon.slice(b.childNodes);l.insertBefore(b,d.endInclude);Aa(c,g);g.cb(-1)};if("src"===d.param)if(Ta[b])avalon.nextTick(function(){m(Ta[b])});else{var n=Sa();n.onreadystatechange=function(){if(4===n.readyState){var c=n.status;if(200<=c&&300>c||304===c||1223===c)m(Ta[b]=n.responseText)}};n.open("GET",
 b,!0);"withCredentials"in n&&(n.withCredentials=!0);n.setRequestHeader("X-Requested-With","XMLHttpRequest");n.send(null)}else{var q=b&&1===b.nodeType?b:p.getElementById(b);if(q){if("NOSCRIPT"===q.tagName&&!q.innerHTML&&!q.fixIE78){n=Sa();n.open("GET",location,!1);n.send(null);c=p.getElementsByTagName("noscript");for(var f=(n.responseText||"").match(gd)||[],e=f.length,t=0;t<e;t++){var H=c[t];H&&(H.style.display="none",H.fixIE78=(f[t].match(hd)||["","&nbsp;"])[1])}}avalon.nextTick(function(){m(q.fixIE78||
diff --git a/examples/avalon.shim.js b/examples/avalon.shim.js
index 067eab5ba..8cfcc2e46 100644
--- a/examples/avalon.shim.js
+++ b/examples/avalon.shim.js
@@ -1122,9 +1122,10 @@
             }
         },
         _remove: function(cls) {
-            this._set((" " + this + " ").replace(" " + cls + " ", " ").trim())
+            this._set((" " + this + " ").replace(" " + cls + " ", " "))
         },
         __set: function(cls) {
+            cls = cls.trim()
             var node = this.node
             if (typeof node.className === "string") {
                 node.className = cls
@@ -1705,13 +1706,13 @@
                     fixVML(el)
                 }
             }
-            if (tag === "tr") {
-                for (els = wrapper.children, i = 0; el = els[i++]; ) {
-                    // IE6-8,如果动态生成tr元素，必须会在后面添加早已废弃caption的标签，其nodeName,innerHTML都为""
-                    if (el.nodeName === "") {
-                        el.parentNode.removeChild(el)
-                        i--
-                    }
+        }
+        if (DOC.createStyleSheet && tag === "tr") {
+            for (els = wrapper.children, i = 0; el = els[i++]; ) {
+                // IE6-9,如果动态生成tr元素，必须会在后面添加早已废弃caption的标签，其nodeName,innerHTML都为""
+                if (el.nodeName === "") {
+                    el.parentNode.removeChild(el)
+                    i--
                 }
             }
         }