function EnterTab()
{//Checks each character entered. 
// replaces "Enter" with tab.
//Called by onkeydown event (IE,PC)
//window.alert("EnterTab" + window.event.keyCode);
if (window.event.keyCode==13)
	{window.event.keyCode = 9;}	
}

function AlphaNumKey(e)
{//Echoes Alphanumeric characters & Backspace.
// excludes others. Called by onkeypress event
//IE,PC 
var intChar = e.keyCode

//window.alert("intChar = " + intChar);
// 0-9, A-Z, a-z
var blnRtn = (intChar > 47 && intChar < 58) || (intChar > 64 && intChar < 91) || (intChar > 96 && intChar < 123) || (intChar == 8);
if (!blnRtn)
{ window.status = "Alphanumeric characters only";}
return blnRtn;
}

function Digit(e)
{//Echoes numeric characters & backspace, 
//excludes others. Called by onkeypress event
//IE, PC only

var intChar = e.keyCode;

//window.alert("intChar = " + intChar);
// 0-9
var blnRtn = (intChar > 47 && intChar < 58) || (intChar == 8);
if (!blnRtn)
{ window.status = "Numeric digits only";}
return blnRtn;
}

function CharInSet(intChar)
{//Excludes specified character intChar
//called by onkeypress event IE,PC only
if ((window.event.keyCode) == intChar )
	{return false;}
else
	{return true;}
}