/** * 给元素增加遮罩层 * @param maskLayer 遮罩层 * @param maskObj 被遮罩元素 */ function doMask(maskLayer,maskObj){ maskLayer.css("filter","alpha(opacity=60)"); maskLayer.css("background-color","#777"); maskLayer.css("z-index","1002"); maskLayer.css("opacity","0.5"); maskLayer.css("-moz-opacity","0.5"); maskLayer.css("position","absolute"); maskLayer.css("width",maskObj.width()); maskLayer.css("height",maskObj.height()); maskLayer.css("left",maskObj.position().left+1); maskLayer.css("top",maskObj.position().top+1); }