function randomPassword() {
	var pw = '';
	var c = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
	for (var i=0;i<8;i++) pw += c.charAt(Math.floor( Math.random() * c.length ));
	$('#password').val(pw);
}
$(document).ready(function(){
	$('.hover img').hover(function(){
		var src = $(this).attr('src');
		$(this).attr('src',src.replace(/(\.\w+)$/,'_o$1'));
	},function(){
		var src = $(this).attr('src');
		$(this).attr('src',src.replace(/_o(\.\w+)$/,'$1'));
	});
});
