add to cart btn dosn´t work

[gfliess]

hi everyone y have a problem maybe someone can help me(im new in VM), also y im sorry about my english i´m from argentina

when i click on add to cart btn its seems to do nothing (no pop up, no ligthbox)  in the right column i have the vm_cart module and also dosn´t refresh
but if you click on show cart you are redirected to that page and products are there, i don´t know if i have to install some ajax/jquery plugin activate something or what? to make this 2 things work (btn issue and "ajax" funcionality in the same page whitout refreshing ex:add product and see it in changing the right cart module)

this happens in chrome, in ie it works  but when i close with the x the continue shopping or show cart box, the cart module donst refresh

in firefox it seems tho work fine


this opctions are chequed
Use  CSS of virtuemart   
Use Jquery de Virtuemart   
Use los scripts de producto   
Use el Script ajax por país / Región   




i have j2.5 and VM2 with yoo cloud theme

leave you a product link

http://www.construofertas.com.ar/index.php/tienda/construccion-en-seco/placa-novoplack-std-95mm-detail


thankz