[#if ad??] [#if ad.category=="image"] [#assign html] [/#assign] document.write("${html?js_string}"); [#elseif ad.category=="flash"] [#assign html] [/#assign] document.write("${html?js_string}"); [#elseif ad.category=="text"] [#assign html] ${(ad.attr.text_title)!} [/#assign] document.write("${html?js_string}"); [#elseif ad.category=="code"] ${ad.code!} [#else] document.write("未知的广告类型:${ad.category!}"); [/#if] [#else] document.write("广告不存在"); [/#if]