function openmenu(toOpen, allMenu){
	for(i=1; i<=allMenu; i++){
		element("content"+i).style.display ='none';
//		showhidden("content"+i)
	}
	
	showhidden("content"+toOpen)
}


function element(obj){
	obj = document.getElementById(obj);
	return obj;
}
function echo(obj, txt){
	obj = document.getElementById(obj).innerHTML=txt;
}
function showhidden(obj){
	obj = document.getElementById(obj);
	obj.style.display == 'none' ? obj.style.display = '' : obj.style.display ='none';
}