code: function(value)
  	{
  		if (value == 'thin')
  		{
  			value = '2';
  		}
  		else if (value == 'medium')
  		{
  			value = '4';
  		}
  		else if (value == 'thick')
  		{
  			value = '6';
  		}
  		
  		value = parseFloat(value);
  		
  		if (isNaN(value))
  		{
  			value = 0;
  		}
  		
  		return value;
  	}
docs: Function: parseCssNumber
  
  Parses the given CSS numeric value adding handling for the values thin,
  medium and thick (2, 4 and 6).