function ventanaSecundarias (URL){ 
window.open(URL,"Fotos","width=450, height=400, scrollbars=yes, menubar=no, location=no, resizable=no") 
} 

function ventanaSecundariasPrecios (URL){ 
window.open(URL,"Precios","width=700, height=300, scrollbars=yes, menubar=no, location=no, resizable=no") 
} 

function ventanaSecundaria (URL){ 
window.open(URL,"Contact","width=670, height=600, scrollbars=yes, menubar=no, location=no, resizable=no, top=50"); 
}