if (document.images)
   {
     uvod1on= new Image(349,328);
     uvod1on.src="img/uvod-on_01.jpg";  
     uvod1off= new Image(349,328);
     uvod1off.src="img/uvod-off_01.jpg";

     uvod2on= new Image(350,328);
     uvod2on.src="img/uvod-on_02.jpg";  
     uvod2off= new Image(350,328);
     uvod2off.src="img/uvod-off_02.jpg";

     uvod3on= new Image(349,330);
     uvod3on.src="img/uvod-on_03.jpg";  
     uvod3off= new Image(349,330);
     uvod3off.src="img/uvod-off_03.jpg";
	 
     uvod4on= new Image(350,330);
     uvod4on.src="img/uvod-on_04.jpg";  
     uvod4off= new Image(350,330);
     uvod4off.src="img/uvod-off_04.jpg";



	 
	 	 
   }