function?showPic(whichpic){ if?(!document.getElementById("placeholder"))?return?false; var?source=whichpic.getAttribute("href"); var?placeholder=document.getElementById("placeholder"); if(placeholder.nodeName?!=?"IMG")?return?false; placeholder.setAttribute("src",source); if(document.getElementById("description")){ var?text=whichpic.getAttribute("title")???whichpic.getAttribute("title")?:?""; var?description=document.ElementById("description"); if?(description.firstChild.nodeType?==?3){ description.firstChild.nodeValue=text;}?return?true;?} function?prepareGallery()?{? ??if?(!document.getElementsByTagName)?return?false;? ??if?(!document.getElementById)?return?false;? ??if?(!document.getElementById("imagegallery"))?return?false;? ??var?gallery?=?document.getElementById("imagegallery");? ??var?links?=?gallery.getElementsByTagName("a");? ??for?(?var?i=0;?i?<?links.length;?i++)?{? ????links[i].onclick?=?function()?{? ??????return?showpic(this)???false?:?true; ????}? ??}? } function?addLoadEvent(func)?{? ??var?oldonload?=?window.onload;? ??if?(typeof?window.onload?!=?'function')?{? ????window.onload?=?func;? ??}?else?{? ????window.onload?=?function()?{? ??????oldonload();? ??????func();? ????}? ??}? }? addLoadEvent(prepareGallery);? ?下面是第二段 ?下面是第二段 ?下面是第二段 ?function?prepareGallery()?{? ??if?(!document.getElementsByTagName)?return?false;? ??if?(!document.getElementById)?return?false;? ??if?(!document.getElementById("imagegallery"))?return?false;? ??var?gallery?=?document.getElementById("imagegallery");? ??var?links?=?gallery.getElementsByTagName("a");? ??for?(?var?i=0;?i?<?links.length;?i++)?{? ????links[i].onclick?=?function()?{? ??????return?showPic(this)???false?:?true;? ????}? ??}? } function?showPic(whichpic)?{? ??if?(!document.getElementById("placeholder"))?return?false;? ??var?source?=?whichpic.getAttribute("href");? ??var?placeholder?=?document.getElementById("placeholder");? ??if?(placeholder.nodeName?!=?"IMG")?return?false;? ??placeholder.setAttribute("src",source);? ??if?(document.getElementById("description"))?{? ????var?text?=?whichpic.getAttribute("title")???whichpic.getAttribute("title")?:?"";? ????var?description?=?document.getElementById("description");? ????if?(description.firstChild.nodeType?==?3)?{? ??????description.firstChild.nodeValue?=?text;? ????}? ??}? ??return?true;? } function?addLoadEvent(func)?{? ??var?oldonload?=?window.onload;? ??if?(typeof?window.onload?!=?'function')?{? ????window.onload?=?func;? ??}?else?{? ????window.onload?=?function()?{? ??????oldonload();? ??????func();? ????}? ??}? }? addLoadEvent(prepareGallery);