window.onorientationchange = detectIPadOrientation;
 function detectIPadOrientation () {

    if ( orientation == 0 ) {
	jQuery('.home-banner').css('height', 'auto');
     alert ('Portrait Mode, Home Button bottom');
    }
    else if ( orientation == 90 ) {
     jQuery('.home-banner').css('height', jQuery(window).outerHeight());
     //alert ('Landscape Mode, Home Button right');
    }
    else if ( orientation == -90 ) {
    jQuery('.home-banner').css('height', jQuery(window).outerHeight());
     //alert ('Landscape Mode, Home Button left');
    }
    else if ( orientation == 180 ) {
	jQuery('.home-banner').css('height', 'auto');
     alert ('Portrait Mode, Home Button top');
    }
 }