var REGEXP = Array();
REGEXP['Email'] = /^[_A-Za-z0-9-]+(\.[_A-Za-z0-9-]+)*@[A-Za-z0-9-]+(\.[A-Za-z0-9-]+)*$/;


var imgRule = {
	'img.videothumb' : function(element)
	{
		element.onmouseover = function()
		{
			var ext = this.src.substring(this.src.length - 4);
			this.src = this.src.replace(ext, '-active' + ext);
		}
		element.onmouseout = function()
		{
			var ext = this.src.substring(this.src.length - 4);
			this.src = this.src.replace('-active' + ext, ext);
		}
	}
}

Behaviour.register(imgRule);