document.onkeydown=function(e){
    if(e.which == 37)
    {
		//prec <-
		document.getElementById('mask').style.visibility='visible';
		xajax_xRedirect('photo-'+document.getElementById('xprec').innerHTML+'#1');
        //xajax_xNextPhoto(document.getElementById('idd').innerHTML,document.getElementById('xprec').innerHTML,document.getElementById('xalbum').innerHTML);
         return false;
    }
    if(e.which == 39)
    {
		//next ->
		document.getElementById('mask').style.visibility='visible';
		xajax_xRedirect('photo-'+document.getElementById('xnext').innerHTML+'#1');
        //xajax_xNextPhoto(document.getElementById('idd').innerHTML,document.getElementById('xnext').innerHTML,document.getElementById('xalbum').innerHTML);
         return false;
    }
}