submenu = document.getElementById('m_0');
img1 = document.getElementById('img0_1');
img2 = document.getElementById('img0_2');
img11 = document.getElementById('img0_1');
img22 = document.getElementById('img0_2');



function showSub1(lay2, lay3) {
	img11 = document.getElementById(lay2);
	img22 = document.getElementById(lay3);
	
	img11.style.display='none';					
	img22.style.display='block';
				
}

function hideSub1() {
	if (img11){
	img11.style.display='none';					
	img22.style.display='block';
	}
}