var real_width;

function select_all(field) {
	field.focus();
	field.select();
}

function resize_image(image){
	var width = image.offsetWidth;
	if (width > 780) {
		image.width=780;
		real_width = width;
	} else if (real_width > 780) {
		image.width = real_width;
	}
}