(function($) {
	$.fn.OuterDiv = function(o) {
        return this.each(function()
		{	new $.OuterDiv(this, o);
        });
    };
	var def = {
		outer:4
    };
    $.OuterDiv = function(e, o) {
		var opt = $.extend({}, def, o || {});
		var c=$(e).attr('class') //class name
		var str=''
		for(var i=1; i<=opt.outer; i++)
		{	str+='<div class="'+c+'_out'+i+'" style="position:absolute"></div>'
		}
		$(e).css('position','relative')
		$(e).append(str)
	}
})(jQuery);