function checkNumeric(objName)
{
	var numberfield = objName;
	if (chkNumeric(objName,"0123456789") == false)
	{
		numberfield.select();
		numberfield.focus();
		return false;
	}
	else
	{
		return true;
	}
}

function checkText(objName)
{
	var numberfield = objName;
	if (chkNumeric(objName,"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_-") == false)
	{
		numberfield.select();
		numberfield.focus();
		return false;
	}
	else
	{
		return true;
	}
}


function checkAlpha(objName)
{
	var numberfield = objName;
	if (chkNumeric(objName,"01234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_-") == false)
	{
		numberfield.select();
		numberfield.focus();
		return false;
	}
	else
	{
		return true;
	}
}

function chkNumeric(objName,pattern)
{
var checkOK = pattern;
var checkStr = objName;
var allValid = true;
var decPoints = 0;
var allNum = "";

for (i = 0;  i < checkStr.value.length;  i++)
{
ch = checkStr.value.charAt(i);
for (j = 0;  j < checkOK.length;  j++)
if (ch == checkOK.charAt(j))
break;
if (j == checkOK.length)
{
allValid = false;
break;
}
if (ch != ",")
allNum += ch;
}
if (!allValid)
{	
return false;
}

// set the minimum and maximum
var chkVal = allNum;
var prsVal = parseInt(allNum);
}