function cambioFondoPre(a,b){var c=window.width<=900?"baja":"alta",d=1+Math.floor(Math.random()*a);a=a;b=b;preLoadAndShow(a,b,c,d)}function preLoadAndShow(a,b,c,d){document.body.style.backgroundImage="url('"+b+c+"/"+d+".jpg')";d=1+Math.floor(Math.random()*a);fondo=new Image;fondo.src=b+c+"/"+d+".jpg";setTimeout("preLoadAndShow('"+a+"', '"+b+"', '"+c+"', '"+d+"')",8E3)}
function mostrarMenu(a){document.getElementById(a).style.visibility="visible";document.getElementById("video").style.display="none"}function ocultarMenu(a){if(a)document.getElementById(a).style.visibility="hidden";else{document.getElementById("menu_rojo").style.visibility="hidden";document.getElementById("contacto").style.visibility="hidden"}document.getElementById("video").style.display="block"}function revisaCampo(a,b,c){return validarRegEx(/.+/,a.value,b,c)}
function revisaEmail(a,b){if(b=="es")return validarRegEx(/^([a-zA-Z0-9_.-])+@(([a-zA-Z0-9-])+.)+([a-zA-Z0-9]{2,4})+$/,a.value,document.getElementById("ayudaEmail"),"El email no tiene un formato v\u00e1lido.");else if(b=="en")return validarRegEx(/^([a-zA-Z0-9_.-])+@(([a-zA-Z0-9-])+.)+([a-zA-Z0-9]{2,4})+$/,a.value,document.getElementById("ayudaEmail"),"The email address lacks a regular syntax.")}
function validarRegEx(a,b,c,d){if(a.test(b)){if(c!=null)c.innerHTML="";return true}else{if(c!=null)c.innerHTML=d;return false}}function vaciar(a){document.getElementById(a).value=""};