Problems with jquery.easing1.3 and slide module

[quierob]

Hello,

Everytime i open my url website appears an error like this:

Detalles de error de página web

Agente de usuario: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; GTB6.6; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.2; AskTbATU2/5.11.3.15590)
Fecha: Sat, 14 May 2011 09:46:42 UTC


Mensaje: 'jQuery' no está definido
Línea: 13
Carácter: 1
Código: 0
URI: http://www.quierobarato.com/js/jquery/jquery.easing.1.3.js


I also installed a module "slide" and puted on above my featured products but, it don't works good.

When i open the website it also takes a lot of time in load.

Can sombody helps me with this?

Thanks.