var preloaded = false;
function preloader()
{
	imgs = new Array();
	args = preloader.arguments;

	for (i = 0; i < args.length; i++)
	{
		if (args[i].indexOf('#') != 0)
		{
			imgs[i] = new Image();
			imgs[i].src = args[i];
		}
	}
	preloaded = true;
}


function menu_bg (cell_id, is_active)
{
	if (preloaded == true)
	{
		cell = document.getElementById(cell_id);
		if (is_active)
		{
			cell.style.background = "url('img/menu_bg.gif') repeat-x bottom";
		}
		else
		{
			cell.style.background = "";
		}
	}
}

function verify_comment_variable (theform)
{
	if (theform.elements['info[name]'].value == '')
	{
		alert(ERROR_NAME_EMPTY);
		theform.elements['info[name]'].focus();
		return false;
	}

	if (theform.elements['info[variant_id]'].value == '')
	{
		alert(ERROR_VARIANT_EMPTY);
		theform.elements['info[variant_id]'].focus();
		return false;
	}
	return true;
}

function verify_comment_variable_voted (theform)
{
	if (theform.elements['info[name]'].value == '')
	{
		alert(ERROR_NAME_EMPTY);
		theform.elements['info[name]'].focus();
		return false;
	}

	return true;
}


function verify_comment_yesno (theform)
{
	if (theform.elements['info[name]'].value == '')
	{
		alert(ERROR_NAME_EMPTY);
		theform.elements['info[name]'].focus();
		return false;
	}

	return true;
}