var cnt = 1;
function changesize( vtd, vdiv, vheight )
{
	var tds = document.getElementById( vtd );
	var divs = document.getElementById( vdiv );
	tds.style.height = ( cnt % 2 == 0 ) ? '29px' : ( vheight + 29 ) + 'px';
	divs.style.height = ( cnt % 2 == 0 ) ? '29px' : ( vheight + 29 ) + 'px';
}

function switchimg( vid, srcs, srcs1 )
{
	var img = document.getElementById( vid );
	img.src = ( cnt % 2 == 0 ) ? srcs : srcs1;
	img.alt = ( cnt % 2 == 0 ) ? 'Дэлгэх' : 'Хумих';
}

function board( vnum, vid, srcs, srcs1, vtd, vdiv, vheight )
{
	cnt = 1;
	if( vnum == 21 )
	{
			if( document.all.board21.style.visibility == 'hidden' )
			{
				document.all.board21.style.visibility = 'visible';
				cnt = 1;
			}
			else
			{
				document.all.board21.style.visibility = 'hidden';
				cnt ++;
			}
	}
	else if(vnum == 1)
	{
		if( document.all.board1.style.visibility == 'hidden' )
		{
			document.all.board1.style.visibility = 'visible';
			cnt = 1;
		}
		else
		{
			document.all.board1.style.visibility = 'hidden';
			cnt++;
		}
	}
	else if(vnum == 2)
	{
		if( document.all.board2.style.visibility == 'hidden' )
		{
			document.all.board2.style.visibility = 'visible';
			cnt = 1;
		}
		else
		{
			document.all.board2.style.visibility = 'hidden';
			cnt++;
		}
	}
	else if(vnum == 3)
	{
		if( document.all.board3.style.visibility == 'hidden' )
		{
			document.all.board3.style.visibility = 'visible';
			cnt = 1;
		}
		else
		{
			document.all.board3.style.visibility = 'hidden';
			cnt++;
		}
	}
	else if(vnum == 4)
	{
		if( document.all.board4.style.visibility == 'hidden' )
		{
			document.all.board4.style.visibility = 'visible';
			cnt = 1;
		}
		else
		{
			document.all.board4.style.visibility = 'hidden';
			cnt++;
		}
	}
	else if(vnum == 5)
	{
		if( document.all.board5.style.visibility == 'hidden' )
		{
			document.all.board5.style.visibility = 'visible';
			cnt = 1;
		}
		else
		{
			document.all.board5.style.visibility = 'hidden';
			cnt++;
		}
	}
	else if(vnum == 6)
	{
		if( document.all.board6.style.visibility == 'hidden' )
		{
			document.all.board6.style.visibility = 'visible';
			cnt = 1;
		}
		else
		{
			document.all.board6.style.visibility = 'hidden';
			cnt++;
		}
	}
	else if(vnum == 7)
	{
		if( document.all.board7.style.visibility == 'hidden' )
		{
			document.all.board7.style.visibility = 'visible';
			cnt = 1;
		}
		else
		{
			document.all.board7.style.visibility = 'hidden';
			cnt++;
		}
	}
	else if(vnum == 8)
	{
		if( document.all.board8.style.visibility == 'hidden' )
		{
			document.all.board8.style.visibility = 'visible';
			cnt = 1;
		}
		else
		{
			document.all.board8.style.visibility = 'hidden';
			cnt++;
		}
	}
	else if(vnum == 9)
	{
		if( document.all.board9.style.visibility == 'hidden' )
		{
			document.all.board9.style.visibility = 'visible';
			cnt = 1;
		}
		else
		{
			document.all.board9.style.visibility = 'hidden';
			cnt++;
		}
	}
	else if(vnum == 10)
	{
		if( document.all.board10.style.visibility == 'hidden' )
		{
			document.all.board10.style.visibility = 'visible';
			cnt = 1;
		}
		else
		{
			document.all.board10.style.visibility = 'hidden';
			cnt ++;
		}
	}
	else if(vnum == 11)
	{
		if( document.all.board11.style.visibility == 'hidden' )
		{
			document.all.board11.style.visibility = 'visible';
			cnt = 1;
		}
		else
		{
			document.all.board11.style.visibility = 'hidden';
			cnt ++;
		}
	}
	else if(vnum == 12)
	{
		if( document.all.board12.style.visibility == 'hidden' )
		{
			document.all.board12.style.visibility = 'visible';
			cnt = 1;
		}
		else
		{
			document.all.board12.style.visibility = 'hidden';
			cnt ++;
		}
	}
	else if(vnum == 13)
	{
		if( document.all.board13.style.visibility == 'hidden' )
		{
			document.all.board13.style.visibility = 'visible';
			cnt = 1;
		}
		else
		{
			document.all.board13.style.visibility = 'hidden';
			cnt ++;
		}
	}
	else if(vnum == 14)
	{
		if( document.all.board14.style.visibility == 'hidden' )
		{
			document.all.board14.style.visibility = 'visible';
			cnt = 1;
		}
		else
		{
			document.all.board14.style.visibility = 'hidden';
			cnt ++;
		}
	}
	else if(vnum == 15)
	{
		if( document.all.board15.style.visibility == 'hidden' )
		{
			document.all.board15.style.visibility = 'visible';
			cnt = 1;
		}
		else
		{
			document.all.board15.style.visibility = 'hidden';
			cnt ++;
		}
	}
	else if(vnum == 16)
	{
		if( document.all.board16.style.visibility == 'hidden' )
		{
			document.all.board16.style.visibility = 'visible';
			cnt = 1;
		}
		else
		{
			document.all.board16.style.visibility = 'hidden';
			cnt ++;
		}
	}
	else if(vnum == 17)
	{
		if( document.all.board17.style.visibility == 'hidden' )
		{
			document.all.board17.style.visibility = 'visible';
			cnt = 1;
		}
		else
		{
			document.all.board17.style.visibility = 'hidden';
			cnt ++;
		}
	}
	else if(vnum == 18)
	{
		if( document.all.board18.style.visibility == 'hidden' )
		{
			document.all.board18.style.visibility = 'visible';
			cnt = 1;
		}
		else
		{
			document.all.board18.style.visibility = 'hidden';
			cnt ++;
		}
	}
	else if(vnum == 19)
	{
		if( document.all.board19.style.visibility == 'hidden' )
		{
			document.all.board19.style.visibility = 'visible';
			cnt = 1;
		}
		else
		{
			document.all.board19.style.visibility = 'hidden';
			cnt ++;
		}
	}
		else if(vnum == 20)
	{
		if( document.all.board20.style.visibility == 'hidden' )
		{
			document.all.board20.style.visibility = 'visible';
			cnt = 1;
		}
		else
		{
			document.all.board20.style.visibility = 'hidden';
			cnt ++;
		}
	}
	switchimg( vid, srcs, srcs1 );
	changesize( vtd, vdiv, vheight );
}