function showIt(layerName) { 
document.getElementById(layerName).style.display = 'block';
} 

function hideIt(layerName) { 
document.getElementById(layerName).style.display = 'none';
} 
function showCabin(cabin_id){
hideIt('diagram_cabin_'+cabin_id);
showIt('image_cabin_'+cabin_id);

}
function showDiagram(cabin_id){
hideIt('image_cabin_'+cabin_id);
showIt('diagram_cabin_'+cabin_id);
}