/**
 * @author Standa
 */

function DisplaySubmenu(id, out){
				var submenu;
				var menu;
				var element;
							
				submenu = getElementsByClass("sm");
				menu = getElementsByClass("active");
								
				for (i = 0; i < submenu.length; i++) {
					submenu[i].style.display = "none";
				}
				
				if (out == false || out == null) {
					for (i = 0; i < menu.length; i++) {
						menu[i].style.backgroundImage="none";
						}
				}
				if (out == true) {
					for (i = 0; i < menu.length; i++) {
						menu[i].style.backgroundImage="url(http://nf.gymna-pi.cz/images/highb.png)";
						
						}
				}
				
				if (id != "" || document.getElementById(id)==null) {
					
					var element =  document.getElementById(id);
					if(element!= null){
						element.style.display="block";
					}
				}
				
}


function getElementsByClass(searchClass,node,tag) {
        var classElements = new Array();
        if ( node == null )
                node = document;
        if ( tag == null )
                tag = '*';
        var els = node.getElementsByTagName(tag);
        var elsLen = els.length;
        var pattern = new RegExp("(^|\\s)"+searchClass+"(\\s|$)");
        for (i = 0, j = 0; i < elsLen; i++) {
                if ( pattern.test(els[i].className) ) {
                        classElements[j] = els[i];
                        j++;
                }
        }
        return classElements;
}