/*** Javascript ***/
//botton. name=g ; block.name=tab_g
function setTab(g,m,n,on,off){
	if(!n)return;
	m=m||1;
	for(i=1;i<=n;i++){
		bt =document.getElementById(g+i);
		tab=document.getElementById('tab_'+g+i);
		bt.className=i==m?(on||bt.on||'over'):(off||bt.off||'');
		if(tab)tab.style.display=i==m?"block":"none";
	}
}