function changeBG(redBG){
	document.getElementById(redBG).className='redBG';
	//setTimeout('randbgShow()', 1000);
}

function randbgShow(){
	var i = Math.round(Math.random()*6);
	var redBG=new Array('rw-top-label-0','rw-top-label-1','rw-top-label-2','rw-top-label-3','rw-top-label-4','rw-top-label-5','rw-top-label-6');
	changeBG(redBG[i]);
}