function objectShow(object) { 
		if (document.getElementById && document.getElementById(object) != null)
			 node = document.getElementById(object).style.display = 'block';
		else if (document.layers && document.layers[object] != null)
			document.layers[object].display = 'block';
		else if (document.all)
			document.all[object].style.display = 'block';
	}
	
	function objectHide(object) {
		if (document.getElementById && document.getElementById(object) != null)
			 node = document.getElementById(object).style.display = 'none';
		else if (document.layers && document.layers[object] != null)
			document.layers[object].display = 'none';
		else if (document.all)
			 document.all[object].style.display = 'none';
	}
	
	function $(id)
	{
        return document.getElementById(id);
    }
    
 	function setCheckboxes(the_form, do_check)
	{
		for (var i = 0; i < 50; i++)
		{
			if((typeof(document.forms[the_form].elements['data[selected_tbl]['+i+']']) != 'undefined'))
			document.forms[the_form].elements['data[selected_tbl]['+i+']'].checked = do_check;
		}
		return true;
	} 
	
	function selectCheckbox(the_form, id, do_check)
	{ 
    	if((typeof(document.forms[the_form].elements[id]) != 'undefined'))
    	document.forms[the_form].elements[id].checked = do_check;
    	return true;
	}
	
	function resetSelect(sel)
	{
		for (var i=0;i<sel.options.length;i++) {
		    if (sel.options[i].defaultSelected) {
		        sel.options[i].selected = true;
		    }
		    else {
		        sel.options[i].selected = false;
		    }
		}	
		return true;
	}
	
	function setText(objectId, text)
	{
		$(objectId).innerHTML = text;
	}
	
	function star_score(star_nr)
	{	
		for(var i=1; i<=5; i++)
		{
			if(i<=star_nr) $('star'+i).style.background = "url(../../img/star.gif) no-repeat top left";
			else  $('star'+i).style.background = "url(../../img/star_white.gif) no-repeat top left";
		}
	}
	
	 function OpenPopUp(adres, sw, sh)
	 {
	   scw = screen.width;
	   sch = screen.height;
	
	   szer = sw;
	   wys  = sh;
	
	   srodek_szer = scw/2;
	   srodek_wys  = sch/2;
	
	   lewy = srodek_szer - szer/2;
	   gora = srodek_wys  - wys/2;
	
	   config='resizable=yes,scrollbars=yes,menubar=no,width=' + szer +',height='+wys+',top='+ gora + ',left=' + lewy;
	   
	   pop = window.open(adres,'popup', config);
		if (window.focus) {pop.focus()}
		return false;
	 }