function checkFileExtension(strFileName,strExtensionList)
{
	var result = true;
	
	if (strFileName.length != 0)
	{
		// Store file name in lower case.
		strField = strFileName.toLowerCase();
		fieldLen = strField.length;
		
		//Build extension list.
		extensionArray = strExtensionList.split(",");
		result = false;

		for (i=0; i < extensionArray.length; i++)
		{
			tempExtension = extensionArray[i].toLowerCase();
			extensionLength = tempExtension.length;
			
			if (strField.substr(fieldLen-extensionLength) == tempExtension)
			{
				result = true;
				break;
			}
		}
	}
	
	return result;
}