if(document.images)
{
about_1=new Image;
about_2=new Image;
treatment_1=new Image;
treatment_2=new Image;
rest_1=new Image;
rest_2=new Image;
services_1=new Image;
services_2=new Image;
costs_1=new Image;
costs_2=new Image;
contacts_1=new Image;
contacts_2=new Image;

about_1.src="img/us07af6b.jpg";
about_2.src="img/us07af6b_rol.jpg";
treatment_1.src="img/us07afbb.jpg";
treatment_2.src="img/us07afbb_rol.jpg";
rest_1.src="img/us07afcf.jpg";
rest_2.src="img/us07afcf_rol.jpg";
services_1.src="img/us07afe3.jpg";
services_2.src="img/us07afe3_rol.jpg";
costs_1.src="img/us07aff7.jpg";
costs_2.src="img/us07aff7_rol.jpg";
contacts_1.src="img/us07b033.jpg";
contacts_2.src="img/us07b033_rol.jpg";
}else{
about_1.src="";
about_2.src="";
treatment_1.src="";
treatment_2.src="";
rest_1.src="";
rest_2.src="";
services_1.src="";
services_2.src="";
costs_1.src="";
costs_2.src="";
contacts_1.src="";
contacts_2.src="";
}