document.write("<div class=\"item\">    <div class=\"title\"><a href=\"http://www.itpow.com/c/2011/01/E1ABKRJOQ1TTJ4ET.asp\" target=\"_blank\"><span class=\"key\">Photoshop</span> 中 <span class=\"key\">PNG</span> <span class=\"key\">颜色</span> <span class=\"key\">256</span> <span class=\"key\">不一定</span><span class=\"key\">比</span> <span class=\"key\">128</span> <span class=\"key\">更</span><span class=\"key\">占</span><span class=\"key\">空间</span></a></div>    <div class=\"abstract\"><span class=\"pubDate\">2011年01月14日</span> <span class=\"key\">Photoshop</span> 处理一张窗口的截图，在“存储为 Web 和设备所用格式”时，选择 <span class=\"key\">PNG</span> <span class=\"key\">颜色</span>为&amp;nbsp;<span class=\"key\">128</span> 种，文件大小为 17.08K，窗口标题栏的渐变还不是很平滑。选择 <span class=\"key\">PNG</span></div>    <div class=\"url\"><a href=\"http://www.itpow.com/c/2011/01/E1ABKRJOQ1TTJ4ET.asp\" target=\"_blank\">http://www.itpow.com/c/2011/01/E1ABKRJOQ1TTJ4ET.asp</a></div></div><div class=\"item\">    <div class=\"title\"><a href=\"http://www.itpow.com/c/2007/01/09B9TXIH2M745LVN.asp\" target=\"_blank\">GIF 还是 <span class=\"key\">PNG</span></a></div>    <div class=\"abstract\"><span class=\"pubDate\">2007年01月17日</span> ，<span class=\"key\">PNG</span> <span class=\"key\">比</span> GIF 有三大优势：alpha 通道（可变透明）。跨平台伽马修正（图像亮度控制）和<span class=\"key\">颜色</span>修正。二元<span class=\"key\">空间</span>交错（一种图像显示的方法）同样，大多数情况下 <span class=\"key\">PNG</span> 压缩性<span class=\"key\">比</span> </div>    <div class=\"url\"><a href=\"http://www.itpow.com/c/2007/01/09B9TXIH2M745LVN.asp\" target=\"_blank\">http://www.itpow.com/c/2007/01/09B9TXIH2M745LVN.asp</a></div></div>")