.but-norm
	{
	        cursor:pointer;
		margin-top:0;
		margin-bottom:0;
		margin-left:0;
		padding-left:0;
		padding-right:0;
		padding-top:0;
		padding-bottom:0;
		background:url(images/empty.gif);
  		border: none; 
  		
	}
	 .but-over
	{
	        cursor:pointer;
		background:url(images/empty.gif);
		margin-bottom:2;
	}
	 .but-down
	{
	        cursor:pointer;
		margin-bottom:2;
	  	background:url(images/empty.gif);
	}