Ext.util.CSS=function(){var d=null;var c=document;var b=/(-[a-z])/gi;var a=function(e,f){return f.charAt(1).toUpperCase()};return{createStyleSheet:function(h,k){var g;var f=c.getElementsByTagName("head")[0];var j=c.createElement("style");j.setAttribute("type","text/css");if(k){j.setAttribute("id",k)}if(Ext.isIE){f.appendChild(j);g=j.styleSheet;g.cssText=h}else{try{j.appendChild(c.createTextNode(h))}catch(i){j.cssText=h}f.appendChild(j);g=j.styleSheet?j.styleSheet:(j.sheet||c.styleSheets[c.styleSheets.length-1])}this.cacheStyleSheet(g);return g},removeStyleSheet:function(f){var e=c.getElementById(f);if(e){e.parentNode.removeChild(e)}},swapStyleSheet:function(g,e){this.removeStyleSheet(g);var f=c.createElement("link");f.setAttribute("rel","stylesheet");f.setAttribute("type","text/css");f.setAttribute("id",g);f.setAttribute("href",e);c.getElementsByTagName("head")[0].appendChild(f)},refreshCache:function(){return this.getRules(true)},cacheStyleSheet:function(g){if(!d){d={}}try{var i=g.cssRules||g.rules;for(var f=i.length-1;f>=0;--f){d[i[f].selectorText]=i[f]}}catch(h){}},getRules:function(g){if(d==null||g){d={};var j=c.styleSheets;for(var h=0,f=j.length;h<f;h++){try{this.cacheStyleSheet(j[h])}catch(k){}}}return d},getRule:function(e,g){var f=this.getRules(g);if(!Ext.isArray(e)){return f[e]}for(var h=0;h<e.length;h++){if(f[e[h]]){return f[e[h]]}}return null},updateRule:function(e,h,g){if(!Ext.isArray(e)){var j=this.getRule(e);if(j){j.style[h.replace(b,a)]=g;return true}}else{for(var f=0;f<e.length;f++){if(this.updateRule(e[f],h,g)){return true}}}return false}}}();