function setSubmenu(){
var chkid=document.body.className
if(chkid!==''){
chkid=chkid.toLowerCase().split('cate_')[1]
newStyle='<style>body.cate_'+chkid+' #sidermenu #category div.body #categpr_'+chkid+'{display:block}</style>'
document.write(newStyle)
}
}
setSubmenu()