function goVertical(a,b){var c=$(b);var d=c.getStyle('margin-left').toInt();var e=c.getParent().getStyle('width').toInt();var f=c.getElements('li');var g=(f[0].getStyle('width').toInt()+(f[0].getStyle('padding').toInt()*2));var h=Math.floor(e/g);var i=(f.length-h);if(f.length<=h)i=0;var j=new Fx.Morph(c,{duration:700,transition:Fx.Transitions.Back.easeOut});var k=(a=='right'?(d-g):(d+g));if(a=='left'&&k>0)k=0;if(a=='right'&&Math.abs(k)>(i*g))k=((i*g)*-1);if((d%g)==0){j.start({'margin-left':[d,k]})}}