var menu_timeout_id;
var curr_item="";


function hide_all() {

   ul_element = document.getElementById("polozka1");         
   ul_element.style.display= "none";		

   ul_element = document.getElementById("polozka2");         
   ul_element.style.display= "none";		   
   
   ul_element = document.getElementById("polozka3");         
   ul_element.style.display= "none";		   
   
    ul_element = document.getElementById("polozka4");         
   ul_element.style.display= "none";
   
    ul_element = document.getElementById("polozka6");         
   ul_element.style.display= "none";		
}

function menu_on(elem)
{	
 hide_all(); 		
 curr_item = "polozka"+elem;	 
 ul_element = document.getElementById(curr_item);
 ul_element.style.display= "block";
 ul_element.style.left = event.clientX-20;
 clearTimeout(menu_timeout_id);
//menu_timeout_id = setTimeout("hide_all()",1000);	  
  return;
}


function menu_off()
{ 
 menu_timeout_id = setTimeout("hide_all()",30);	  
 return;
}

function keep_opened()
{
clearTimeout(menu_timeout_id);	
}