String.prototype.format = function()
{
	var pattern = /\{\d+\}/g;
	var args = arguments;
	return this.replace(pattern, function(capture){ return args[capture.match(/\d+/)]; });
}

var menuIds = ['mainMenu', 'mainMenu1'];
var popupIds = ['subMenu', 'subMenu1'];

J(document).ready(function() {
    J(menuIds).each(function(i) {
        J('#' + menuIds[i]).mouseover(function() {
            J('#' + popupIds[i]).fadeIn('slow');
        });
    });
    
    J(menuIds).each(function(i) {
        J('#' + menuIds[i]).mouseleave(function() {
			J('#' + popupIds[i]).fadeOut('slow');
        });
    });
});