加水印的问题~~水印图片的背景怎么才能透明？
文字可能表达不清楚 直接上例子吧...
这是我希望的效果：
这是我现在实现的效果：
就是水印图片的背景怎么样变成透明色？
代码在2楼...
------解决方案--------------------
相当简单...弄张透明的gif或者png图片就欧了！给哥哥分啊！哈哈哈
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