$(document).ready(function()
{

$("#navigacia p.menu_head").click(function()
{
$(this).next("div.menu_body").slideToggle(300).siblings("div.menu_body").slideUp("slow");
if($(this).attr("alt")=="aktualne"){
$(this).css({backgroundImage:"url(infusions/navigation_panel/images/ikona_plus.png)"});
$(this).attr({alt: ""});
}else{
$("#navigacia p.menu_head").css({backgroundImage:"url(infusions/navigation_panel/images/ikona_plus.png)"}).attr({alt: ""});

$(this).attr({alt: "aktualne"});
if($(this).attr("alt")=="aktualne"){
$(this).css({backgroundImage:"url(infusions/navigation_panel/images/ikona_minus.png)"});
}else{

}
}
});
	
	
$("#navigacia p.menu_head_sub").click(function()
{
$(this).next("div.menu_body_sub").slideToggle(300).siblings("div.menu_body_sub").slideUp("slow");
if($(this).attr("alt")=="aktualne_sub"){
$(this).css({backgroundImage:"url(infusions/navigation_panel/images/ikona_plus.png)"});
$(this).attr({alt: ""});
}else{
$("#navigacia p.menu_head_sub").css({backgroundImage:"url(infusions/navigation_panel/images/ikona_plus.png)"}).attr({alt: ""});

$(this).attr({alt: "aktualne_sub"});
if($(this).attr("alt")=="aktualne_sub"){
$(this).css({backgroundImage:"url(infusions/navigation_panel/images/ikona_minus.png)"});
}else{

}
}
});



});