function setColorToBlack(id) {
			c = document.getElementById('submain');
			c.className = 'header submain1' ;
			
			db = document.getElementById('black_dot');
			db.className = 'active1' ;
			
			dw = document.getElementById('white_dot');
			dw.className = 'inactive' ;
		}
		
		function setColorToWhite(id) {
			c = document.getElementById('submain');
			c.className = 'header submain' ;
			
			db = document.getElementById('black_dot');
			db.className = 'inactive1' ;
			
			dw = document.getElementById('white_dot');
			dw.className = 'active' ;
		}