dwz图标样式扩展

    /**   
     * 自动加载toolbar的图片，iconClass=contexPath#imageName   
     */    
    function readyToolbarCSS() {     
        var $a = $("a[iconClass]");     
        $a.each(function(){     
            var imageName = $(this).attr("iconClass");     
            var $span = $("span", this);     
            if ($span.length == 0) {     
                // 用作<td>中的<a>     
                $(this).css({     
                    "background":"url(../style/img/toolbar_icons/" + imageName + ".png) no-repeat",     
                    "background-position":"50% 50%",     
                    "width":"22px",     
                    "height":"20px",     
                    "text-indent":"-1000px",     
                    "overflow":"hidden",     
                    "display":"block",     
                    "float":"left"    
                });      
            } else {     
                // 用作panelBar toolBar中的<span>     
                $span.css({     
                    "background-image":"url(../style/img/toolbar_icons/" + imageName + ".png)",     
                    "background-position": "0 3px"    
                });                          
            }     
        });     
    }