window.addEvent('domready', function()
{
	$$("input.search-field").each(function(field)
	{
		var defaultValue = field.value;
		
		field.onfocus = function()
		{
			field.value = (field.value == defaultValue) ?
				"" : field.value;
		};

		field.onblur = function()
		{
			field.value = (field.value == "") ? defaultValue :
			field.value;
		};
	});
});