function toggleDisplay(elm, elmm, classpassed){
	if(!document.getElementById){
		return;
	}
	var obj=document.getElementById(elm);
	
	if("none"==obj.style.display){
		obj.style.display="block";
		document.getElementById(elmm).className=classpassed;
	}else if("block"==obj.style.display){
		obj.style.display="none";
		document.getElementById(elmm).className='';
	}
}

function changeSty(elm, classpassed){
	document.getElementById(elm).className=classpassed;
}