Solve the problem of grid cm dislocation on ExtJS 3 bug Chrome __js

1, solve ExtJS 3 chrome on the grid cm dislocation problem, this is a ExtJS bug

Problems like the picture below

2. Solutions The official

http://www.sencha.com/forum/archive/index.php/t-198124.html?s=782e3297b3794980e855431bf90e6172

Ext.grid.ColumnModel.override ({  
        gettotalwidth:function (includehidden) {  
            var off = 0;  
            if (ext.ischrome) {off  
                = 2;  
            };  
            if (!this.totalwidth) {  
                this.totalwidth = 0;  
                for (var i = 0, len = this.config.length i < len; i++) {  
                    if (Includehidden | |!this.ishidden (i)) {  
                        THIS.TOTALW Idth + = This.getcolumnwidth (i) +off;  
            };}; return this.totalwidth;  
   }  
});