function secBoard(n)
			{
				for(i=1;i<4;i++)
				{
					eval("document.getElementById('cel"+i+"').className='dj_3399FF'");
				    eval("document.getElementById('menu"+i+"').className='zt_3399FF'");
				}
				eval("document.getElementById('cel"+n+"').className='ff_20_dj'");
				eval("document.getElementById('menu"+n+"').className='zt_FF6600'");
				for(i=1;i<4;i++)
					{eval("tbx0"+i+".style.display='none'");}
				eval("tbx0"+n+".style.display='block'");
			}