function goTo(obj) {
	var url = '?catID=' + obj.options[obj.selectedIndex].value + '&g=' + gup('g');
	///alert('?catID=' + obj.options[obj.selectedIndex].value + '&g=' + gup('g'));
	document.location=url;
}
function gup( name )
{
  name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
  var regexS = "[\\?&]"+name+"=([^&#]*)";
  var regex = new RegExp( regexS );
  var results = regex.exec( window.location.href );
  if( results == null )
    return "";
  else
    return results[1];
}
function changeVisibility(id) {
	var obj = document.getElementById(id).style;
	if (obj.display == "") {		
		obj.display = "block";
	} else if (obj.display == "none") {		
		obj.display = "block";			
	} else if (obj.display == "block") {	
		obj.display = "none";		
	}
}

function checkUpload(id) {
	if (document.getElementById(id).value != '') return true;
	alert('Моля изберете файл!');
	document.getElementById(id).focus();
	return false;
}