var fce_opakovani = new Array(); 
    
    function setOpacity(id, iter) {

      if (navigator.appName.indexOf("Microsoft")!=-1) {
        ft=document.getElementById(id).filters;
        ft.alpha.opacity = eval(ft.alpha.opacity) + iter*1000;
         
         if (ft.alpha.opacity <= 0) {
            window.clearInterval(fce_opakovani["0"+id]);
            ft.alpha.opacity = 0; 
  	        fce_opakovani[id] = "";
        }
        if (ft.alpha.opacity >= 100){
            window.clearInterval(fce_opakovani["1"+id]);	        
            ft.alpha.opacity = 100; 
        }
      }
      
      else  {
        st=document.getElementById(id).style;
	      st.opacity = eval(st.opacity) + iter;
        if (st.opacity <= 0) {
          window.clearInterval(fce_opakovani["0"+id]);
          st.opacity = 0;       
	        fce_opakovani[id] = "";
        }
        if (st.opacity >= 1) {
            window.clearInterval(fce_opakovani["1"+id]);	        
            st.opacity = 1;  
        }
     }
     }
    
    function selectMenuOut(id){        
        st=document.getElementById(id).style;
	window.clearInterval(fce_opakovani["0"+id]);
	window.clearInterval(fce_opakovani["1"+id]);
       fce_opakovani["0"+id] = window.setInterval("setOpacity(\'" + id + "\',-0.1)", 50);  
    }
    
    function selectMenuOn(id){
        st=document.getElementById(id).style;
	window.clearInterval(fce_opakovani["0"+id]);
	window.clearInterval(fce_opakovani["1"+id]);	
	fce_opakovani["1"+id] = window.setInterval("setOpacity(\'" + id + "\',0.1)", 25); 
	
        
    }