图片按钮大全：http://www.iconfont.cn
获取图片样式
var add = document.getElementsByClassName("custom_style_add buttonDiv");/*获取按钮当前样式*/
var html_add = "<image src='../xmlxGroup/resources/images/add.png' width='18' height='17' align='center' class='custom_style_common_img'> <span class='custom_style_common_span'>新增</span><span class='custom_style_common_vertical_line' style='margin-right:25px'></span>";/*拼接样式*/
add[0].innerHTML =html_add;/*赋值*/