iframe {
	position: absolute;
	border: none;
	cursor: pointer;
}

#canvas{
	position: absolute;
	z-index: 20;
}

#nodes{
	position: absolute;
	width:100%;
	height:100%;
}

.btn{
	border: outset;
	border-radius: 5px;
	height: 35px;
	width: 80px;
	background-color: #046380;
	position: absolute;
	/*float:right;*/
	color: white;
	margin-left: 30px;
	margin-top:15px;
	cursor: pointer;
	z-index: 100;
}

img{
	display: block;
}

.div_cover{
	position:absolute;
	z-index: 10;
	cursor: pointer;
}