function resize() {
	var win_width = document.body.clientWidth;
	
	if (win_width < 775) document.getElementById('MAIN_CONTAINER').style.width = '775px';
	else if (win_width > 946) document.getElementById('MAIN_CONTAINER').style.width = '946px';
	else document.getElementById('MAIN_CONTAINER').style.width = '100%';
}

window.onload = resize;
window.onresize = resize;