function change(){
   	if(document.all.collapse.alt=="collapse"){
		document.all.collapse.alt="expand";
		document.all.collapse.src="images/upLoadImagen.gif";
	}else{
		document.all.collapse.alt="collapse";
		document.all.collapse.src="images/iconoHome.gif";
	}
}   
function toggle(target){
	obj=(document.all) ? document.all[target] : document.getElementById(target);
     	obj.style.display=(obj.style.display=='none') ? 'inline' : 'none';
 }