function show1(id){
	$(id).style.display = "block";
}

function hide1(id){
	  
	$(id).style.display = "none";
}

function change_class(object,new_class_name,old_class_name){
	Element.removeClassName(object,old_class_name);
	Element.addClassName(object,new_class_name);
}


<!--  Hide script from older browsers

function addToFavorites( url, name)
{	
	
	if (window.external)
	{
		window.external.AddFavorite(url,name)
	}
	else
	{ 
		alert("Sorry! Your browser doesn't support this function.");
	}
}