document.writeln('<div class="search_ctner">');
document.writeln('	<div id="search_title" class="left"></div>');
document.writeln('	<div id="search_main" class="left">');
document.writeln('	关键字：');
document.writeln('		<input id="keyword" onkeydown="if (event.keyCode==13) {window.open(\'/search/\' + this.value)};" type="text" value="" />');
document.writeln('		<input id="button" onclick="window.open(\'/search/\' + keyword.value);" type="button" value=" 搜 索 " />');
document.writeln('		<span class="hand" title="A B：包含A或者包含B；&#13;A+B：包含A并且包含B；&#13;A-B：包含A，并且不包含B。">搜索技巧</span>');
document.writeln('	</div>');
document.writeln('</div>');