document.writeln("<div style='clear:both; margin-top:10px;'><img src=\'/images/ggleft.png\' width=\'210\' height=\'100\'></div>");
把最前面的/
去掉
<img src=\'images/ggleft.png\' width=\'210\' height=\'100\'>
或者加上点
<img src=\'./images/ggleft.png\' width=\'210\' height=\'100\'>
document.writeln("<div style='clear:both; margin-top:10px;'><img src=\'images/ggleft.png\' width=\'210\' height=\'100\'></div>");
你图片引用路径错了,单引号前面不要加/