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function get(classnameСlos, classnameOpen){

	this.classnameСlos = classnameСlos;
	this.classnameOpen = classnameOpen;

	var _getOne = doc.getElementsByClassName(classnameСlos);
	var _getTwo = doc.getElementsByClassName(classnameOpen);

	function loop_a(){
		for (var i = 0 ; i < _getOne.length ; i+1) {
			return	_getOne[i].className
		}	

	};

	function loop_b(){
		for (var i = 0 ; i < _getTwo.length ; i+1) {
			return	_getTwo[i].className
		}	

	};

	this.openMenu = function(){
		for (var i = 0 ; i < _getOne.length ; i+1) {
			_getOne[i].className = this.classnameOpen
		}	

	};

	this.closMenu = function(){
		for (var i = 0 ; i < _getTwo.length ; i+1) {
			_getTwo[i].className = this.classnameСlos
		}	

	};		

	this.opendownmenu = function(newobj){
		if (loop_b() === undefined) {
			newobj.openMenu()
		}else if (loop_a() === undefined){
			setTimeout(function() { newobj.closMenu() }, 100);

		}
	}
};