function in_array ( what, where )
{
	var a = false;
	for(var i=0; i<where.length; i++)
	{
		if( what == where[i] )
		{
			a = true;
			break;
		}
	}
	return a;
}

function trim ( str )
{
	return str.replace(/^\s+|\s+$/g, '');	
}