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

function handlePrevalue(element, defaultValue, focused)
{
	var currentValue = trim(element.value).toLowerCase();

	if (focused)
	{
		if (currentValue == defaultValue.toLowerCase())
		{
			element.value = '';
		}
		
		element.style.color = '#000000';
	}
	else
	{
		if (currentValue == defaultValue.toLowerCase() || currentValue == '')
		{
			element.style.color = '#999999';
			element.value = defaultValue;
		}
	}
}