var UsernameStr = 'E-Mail';
var PasswordStr = 'Contrasenya';

function setUsername ( f, focused ) {
    
    f = document.getElementById ?
        document.getElementById( "txtuser" ) :
        false;
    
    if ( ! f )
        return 0;
    
    if ( focused ) {
        if ( UsernameStr == f.value ) {
            f.value = '';
        }
    } else {
        if ( '' == f.value ) {
            f.value = UsernameStr;
        }
    }
}

function setPassword ( f, focused ) {
    
    if ( document.getElementById ) {
        t = document.getElementById( "txtpass" );
        p = document.getElementById( "Pass" );
        
        if ( p ) {
            empty_pass = p.value.match( /^\s*$/ ) ? true : false;
            
            t.style.display = ! focused && empty_pass ? "block" : "none";
            p.style.display = focused || ! empty_pass ? "block" : "none";
            
            if ( focused && p.focus ) p.focus();
        }
    }
}