var rollOver = {
				'.even' : function(elm) {
					elm.onmouseover = function() {
						this.className = 'evenHover';
					}
					
					elm.onmouseout = function() {
						this.className = 'even';
					}
				}
			};
			var rollOver2 = {
				'.odd' : function(elm) {
					elm.onmouseover = function() {
						this.className = 'oddHover';
					}
					
					elm.onmouseout = function() {
						this.className = 'odd';
					}
				}
			};
			
Behaviour.register(rollOver);
Behaviour.register(rollOver2);