if (/(iPhone|iPad|iPod|iOS)/i.test(navigator.userAgent)) {  
    //alert(navigator.userAgent);    
    window.location.href ="iPhone.html";  
} else if (/(Android)/i.test(navigator.userAgent)) {  
    //alert(navigator.userAgent);   
    window.location.href ="Android.html";  
} else {  
    window.location.href ="pc.html";  
};