document.write('<form name="key_search" target="_blank" method="post" action="">');
document.write('<table border="0" cellspacing="0" cellpadding="0">');
document.write('<tr>');
document.write('<td >&nbsp;</td>');
document.write('<td >全站搜索：</td>');
document.write('<td ><input name="txtSearch" type="text" size="15" />&nbsp;&nbsp;</td>');
document.write('<td ><select name="selectItem" ID="selectItem">');
document.write('<option value="biz-1">供应信息</option>');
document.write('<option value="biz-2">求购信息</option>');
document.write('<option value="book">电子样本</option>');
document.write('<option value="info">行业资讯</option>');
document.write('<option value="ask">电气爱问</option>');
document.write('<option value="b2b">企 业 库</option>');
document.write('<option value="pro">产 品 库</option>');
document.write('</select>');
document.write('</td>');
document.write('<td >&nbsp;&nbsp;<input type="submit" name="Submit1" value="搜索" onclick="return checkSearch();" /></td>');
document.write('<td>&nbsp;</td>');
document.write('</tr>');
document.write('</table>');
document.write('</form>');

function checkSearch(){
	var name=key_search.txtSearch.value.replace(/^\s* | \s*$/i,"");
	if(name == ""){
		alert('请输入搜索关键字！');
		return false;
	}else{
		var item=key_search.selectItem;
		if(item.options[item.selectedIndex].value=="ask"){
			key_search.action="http://ask.bfjieju.com/AskSearch.aspx?Title="+escape(name);
		}else{
			var url="http://search.bfjieju.com/"+item.options[item.selectedIndex].value+".aspx?q="+escape(name);
			key_search.action=url;
		}
		//key_search.submit();
		return true;
	}
}