Bug 176450 Support link to CSS Feature(Model Part)
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/util/ModelUtil.java
{
			return new File( filePath ).toURL( );
		}
		catch ( MalformedURLException e )
		{
		}
		return null;
	}
	/**
	 * Formats the file path into the format of unix. Unix file path is
	 * compatible on the windows platforms. If the <code>filePath</code>
	 * contains '\' characters, these characters are replaced by '/'.
	 * 
	 * @param filePath
	 *            the file path
	 * @return the file path only containing '/'
	 */
	public static String toUniversalFileFormat( String filePath )
	{
		if ( StringUtil.isBlank( filePath ) )
			return filePath;
		if ( filePath.indexOf( '\\' ) == -1 )
			return filePath;
		return filePath.replace( '\\', '/' );
	}
	/**
	 * Returns the tag according to the simple property type. If the property
	 * type is structure or structure list, this method can not be used.
	 * 
	 * <ul>