var interval;
		var arr_float = new Array('float_0','float_1','float_10');
		var tmp_action_id, tmp_float_id;
		function float_on(){
					// float_on(action_id, action_par, float_id) -- float_on('menu_top_button_bg', '0px -80px', 'float_0')
					// action_id - id elementu kde budu provadet nejakou akci
					// action_par - paramety akce - cela hodnota style.backgroundPosition = "0px -20px";
					// float_id - id floatu ktery budu nechavat zobrazovat;
			var action_id = float_on.arguments[0];
			var action_par = float_on.arguments[1];
			if (float_on.arguments.length > 2)
				var float_id = float_on.arguments[2];
			else 
				var float_id = '';
			clearTimeout(interval);
			float_off_all(float_id);
			document.getElementById(action_id).style.backgroundPosition = action_par;
			if (float_id!='')
				document.getElementById(float_id).style.visibility = 'visible';
		}
		
		function float_off_all(){
			for (x=0; x<arr_float.length; x++){
				if (float_off_all.arguments[1]!=arr_float[x]){
					document.getElementById(arr_float[x]).style.visibility = 'hidden';
					if (document.getElementById(arr_float[x]+'_parent')!= null)
						document.getElementById(arr_float[x]+'_parent').style.backgroundPosition = "0px 0px";
				}
			}
		}
		
		function float_off(){
			var action_id = float_off.arguments[0];
			if (float_off.arguments.length>1)
				var float_id = float_off.arguments[1];
			else 
				var float_id = '';

			tmp_action_id = action_id;
			tmp_float_id = float_id;
			interval = setTimeout("float_off_act(tmp_action_id, tmp_float_id)", 1);

		}
				
		function float_off_act(action_id, float_id){
			document.getElementById(action_id).style.backgroundPosition = "0px 0px";
			if (float_id!='')
				document.getElementById(float_id).style.visibility = 'hidden';
		}