// PRELOADING IMAGES
if (document.images) {

	// botões do layout
	img1_on =new Image();  img1_on.src ="img/layout/voltar2.gif";
 	img1_off=new Image();  img1_off.src="img/layout/voltar1.gif";

	// botões da caixa de erro
	img50_on =new Image();  img50_on.src ="../img/cxerro/s3-2.jpg";
 	img50_off=new Image();  img50_off.src="../img/cxerro/s3-1.jpg";

}

function movr(k) {
	if (document.images) 
		eval('document.img'+k+'.src=img'+k+'_on.src');
}

function mout(k) {
	if (document.images) 
		eval('document.img'+k+'.src=img'+k+'_off.src');
}