function showSubmenu(){
	var src = document.getElementById(arguments[0]);
	var child = src.getElementsByTagName('ul')[0];
   if(child){
	src.removeChild(child);
   }else{
	var newcontent = document.createElement('ul');
	for( var i = 1; i < arguments.length - 1; i+=2 ) {	
		var ulcontent = document.createElement('li');
		var acontent = document.createElement('a');
		acontent.href = "air_conditioners.php?page=1&manufacturers_id="+arguments[i+1];
		acontent.appendChild(document.createTextNode(arguments[i]));
		ulcontent.appendChild(acontent);
		newcontent.appendChild(ulcontent);
	}
	src.appendChild(newcontent);

   }
}