function troca(parametro) {

	if(parametro == members ) { document.members.src = "Ingles/members2.jpg"; }
	if(parametro == publications ) { document.publications.src = "Ingles/publications2.jpg"; }
	if(parametro == developments ) { document.developments.src = "Ingles/developments2.jpg"; }
	if(parametro == search1 ) { document.search1.src = "Ingles/search2.jpg"; }
	if(parametro == cola ) { document.cola.src = "Ingles/collaborators2.jpg"; }

	}

function destroca(parametro) {
	
	if(parametro == members ) { document.members.src = "Ingles/members.jpg"; }
	if(parametro == publications ) { document.publications.src = "Ingles/publications.jpg"; }
	if(parametro == developments ) { document.developments.src = "Ingles/developments.jpg"; }
	if(parametro == search1 ) { document.search1.src = "Ingles/search.jpg"; }
	if(parametro == cola) { document.cola.src = "Ingles/collaborators.jpg"; } 
	
	

}