var menu=null;function init_menu(){menu=document.getElementById('menu');var li=menu.getElementsByTagName('li'),i=li.length;while(i--)li[i].onmouseover=showMenu;menu.onmouseout=timeout;menu.onmouseover=cleartimer;}
var timer=null;function timeout(){timer=setTimeout('hideMenus(menu, null)',1000);}
function cleartimer(){if(timer){clearTimeout(timer);timer=null;}}
function showMenu(){var ul=this.parentNode;while(ul){if(ul.tagName.toLowerCase()=='ul'){hideMenus(ul,this);break;}
ul=ul.parentNode;}
ul=this.firstChild;while(ul){if(ul.nodeType==1&&ul.tagName.toLowerCase()=='ul'){ul.style.display='block';ul.style.visibility='';break;}
ul=ul.nextSibling;}}
function hideMenus(level,skipli){var stack=[level],i=0,li,j,el,tag;do{li=stack[i].childNodes,j=li.length;while(j--){el=li[j];if(el.nodeType==1&&el!=skipli){tag=el.tagName.toLowerCase();if(tag=='li'){stack[i++]=el;}
else if(tag=='ul'&&el.style.display=='block'){stack[i++]=el;el.style.display='none';el.style.visibility='hidden';}}}}
while(i--);}
try{document.execCommand("BackgroundImageCache",false,true);}catch(err){}

function change(){
adExp.width=988;adExp.height=400;}
function changeBack(){
adExp.width=301;adExp.height=251;}