function cleartextbox(element)
{
	element.value = '';
}

function filltextbox(element,text,allowifhascontent)
{
	if (element.value.length > 0)
	{
		if (allowifhascontent)
		{
			element.value = text;
		}
	}
	else
	{
		element.value = text;
	}
}