function numbersonly(e)
{

	var unicode=document.all? e.keyCode : e.which;
	if (unicode > 31 && (unicode < 48 || unicode > 57))
			return false; //disable key press
}

function addbookmark(bookmarkurl, bookmarktitle)
{
	if (document.all)
	{window.external.AddFavorite(bookmarkurl,bookmarktitle)}
}

function isNumericKey(e)
{
	var k = document.all ? e.keyCode : e.which;
	return ((k > 47 && k < 58) || k == 8 || k == 0);
}

function extractNumeric(str)
{
	return str.replace(/\D/g,"");
}

function checkFieldBlank(field) 
{
	if (field == "")
		return false;
	else
		return true;
}