/**
 * ID-Based Functions.
 */

function change_class(id_target, var_class)
	{
	change_class_o(document.getElementById(id_target), var_class);
	}

function add_class(id_target, var_class)
	{
	add_class_o(document.getElementById(id_target), var_class);
	}

function remove_class(var_target, var_class)
	{
	remove_class_o(document.getElementById(id_target), var_class);
	}



/**
 * Object-Based Functions.
 */

function change_class_o(obj_target, var_class)
	{
	if (obj_target !== null)
		{
		obj_target.className	= var_class;
		}
	}

function add_class_o(obj_target, var_class)
	{
	obj_target.className	+= " "+var_class;
	//alert(obj_target.className);
	}

function remove_class_o(obj_target, var_class)
	{
	cleanup_class_o(obj_target, var_class);
	//obj_target.className	= obj_target.className.replace(" "+var_class,"");
	//alert(obj_target.className);
	}

function cleanup_class_o(obj_target, var_class)
	{
	//obj_target.className	= obj_target.className.replace(" "+var_class,"");
	
	var class_name	= obj_target.className;
	
	if (obj_target.className.indexOf(var_class) != -1)
		{
		while(obj_target.className.indexOf(var_class) != -1)
			{
			obj_target.className	= obj_target.className.replace(" "+var_class,"");
			}
		}
	//obj_target.className	= class_name;
	//alert(obj_target.className);
	}