function display(obj){
	if(document.getElementById(obj).style.display=="block"){
	   document.getElementById(obj).style.display="none";
	}else{
	   document.getElementById(obj).style.display="block";
	}
}

function show(obj){
	document.getElementById(obj).style.display="block";
}

function hide(obj){
	document.getElementById(obj).style.display="none";
}