Why does the resizing of the content does not work in Firefox?

Why does the resizing of the content does not work in Firefox?

The Code makes that every content fits to the size of the browser. It
works perfectly in webkit so:
Why does this not function in Firefox ?
window.onresize = function(event) {
resizeDiv();
};
function resizeDiv() {
vph = $(window).height();
$('#content').css({'min-height': vph + 'px'});
$('#content1').css({'min-height': vph + 'px'});
$('#content2').css({'min-height': vph + 'px'});
$('#content3').css({'min-height': vph + 'px'});
$('#content4').css({'min-height': vph + 'px'});
$('#content5').css({'min-height': vph + 'px'});
$('#content6').css({'min-height': vph + 'px'});
$('#content7').css({'min-height': vph + 'px'});
$('#content8').css({'min-height': vph + 'px'});
$('#content9').css({'min-height': vph + 'px'});
};