//Function To Check Valid String Only Consists Of a-z 0-9
function isValidStr(checkStr)
{
var checksOK = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890_";

var allValid = true;

if(checkStr.charAt(0)=="_" || checkStr.charAt(checkStr.length-1)=="_")
{
	return false;
}
for (i = 0;  i < checkStr.length;  i++)
{
ch = checkStr.charAt(i);
for (j = 0;  j < checksOK.length;  j++)
if (ch == checksOK.charAt(j))
break;
if (j == checksOK.length)
{
allValid = false;
break;
}
}
 
if (!allValid)
{
	return false;
}
else
{
	return true;
}

}


//Function To Check Email
function emailCheck (emailStr) 
{
var checkTLD=1;
var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/;
var emailPat=/^(.+)@(.+)$/;
var specialChars="\\(\\)><@,;:\\\\\\\"\\.\\[\\]";
var validChars="\[^\\s" + specialChars + "\]";
var quotedUser="(\"[^\"]*\")";
var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;
var atom=validChars + '+';
var word="(" + atom + "|" + quotedUser + ")";
var userPat=new RegExp("^" + word + "(\\." + word + ")*$");
var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");
var matchArray=emailStr.match(emailPat);
if (matchArray==null) 
{
//alert("Email address seems incorrect (check @ and .'s)");
return false;
}
var user=matchArray[1];
var domain=matchArray[2];

for (i=0; i<user.length; i++) 
{
if (user.charCodeAt(i)>127) 
{
//alert("Ths username contains invalid characters.");
return false;
}
}
for (i=0; i<domain.length; i++) 
{
if (domain.charCodeAt(i)>127) 
{
//alert("Ths domain name contains invalid characters.");
return false;
}
}

if (user.match(userPat)==null) 
{
//alert("The username doesn't seem to be valid.");
return false;
}
var IPArray=domain.match(ipDomainPat);
if (IPArray!=null) 
{

for (var i=1;i<=4;i++) 
{
if (IPArray[i]>255) 
{
//alert("Destination IP address is invalid!");
return false;
}
}
return true;
}
var atomPat=new RegExp("^" + atom + "$");
var domArr=domain.split(".");
var len=domArr.length;
for (i=0;i<len;i++) 
{
if (domArr[i].search(atomPat)==-1) 
{
//alert("The domain name does not seem to be valid.");
return false;
}
}
if (checkTLD && domArr[domArr.length-1].length!=2 && domArr[domArr.length-1].search(knownDomsPat)==-1) 
{
//alert("The address must end in a well-known domain or two letter " + "country.");
return false;
}
if (len<2) 
{
//alert("This address is missing a hostname!");
return false;
}
return true;
}






//Function To Check Date
function isDate(DateToCheck){
if(DateToCheck==""){return false;}
var m_strDate = FormatDate(DateToCheck,"dd/mm/yyyy");
if(m_strDate==""){
return false;
}
var m_arrDate = m_strDate.split("/");
var m_DAY = m_arrDate[0];
var m_MONTH = m_arrDate[1];
var m_YEAR = m_arrDate[2];
if(m_YEAR.length > 4){return false;}
m_strDate = m_MONTH + "/" + m_DAY + "/" + m_YEAR;
var testDate=new Date(m_strDate);
if(testDate.getMonth()+1==m_MONTH){
return true;
} 
else{
return false;
}
}//end function


function FormatDate(DateToFormat,FormatAs){
if(DateToFormat==""){return"";}
if(!FormatAs){FormatAs="dd/mm/yyyy";}

var strReturnDate;
FormatAs = FormatAs.toLowerCase();
DateToFormat = DateToFormat.toLowerCase();
var arrDate
var arrMonths = new Array("January","February","March","April","May","June","July","August","September","October","November","December");
var strMONTH;
var Separator;

while(DateToFormat.indexOf("st")>-1){
DateToFormat = DateToFormat.replace("st","");
}

while(DateToFormat.indexOf("nd")>-1){
DateToFormat = DateToFormat.replace("nd","");
}

while(DateToFormat.indexOf("rd")>-1){
DateToFormat = DateToFormat.replace("rd","");
}

while(DateToFormat.indexOf("th")>-1){
DateToFormat = DateToFormat.replace("th","");
}

if(DateToFormat.indexOf(".")>-1){
Separator = ".";
}

if(DateToFormat.indexOf("-")>-1){
Separator = "-";
}


if(DateToFormat.indexOf("/")>-1){
Separator = "/";
}

if(DateToFormat.indexOf(" ")>-1){
Separator = " ";
}

arrDate = DateToFormat.split(Separator);
DateToFormat = "";
	for(var iSD = 0;iSD < arrDate.length;iSD++){
		if(arrDate[iSD]!=""){
		DateToFormat += arrDate[iSD] + Separator;
		}
	}
DateToFormat = DateToFormat.substring(0,DateToFormat.length-1);
arrDate = DateToFormat.split(Separator);

if(arrDate.length < 3){
return "";
}

var DAY = arrDate[0];
var MONTH = arrDate[1];
var YEAR = arrDate[2];




if(parseFloat(arrDate[1]) > 12){
DAY = arrDate[1];
MONTH = arrDate[0];
}

if(parseFloat(DAY) && DAY.toString().length==4){
YEAR = arrDate[0];
DAY = arrDate[2];
MONTH = arrDate[1];
}


for(var iSD = 0;iSD < arrMonths.length;iSD++){
var ShortMonth = arrMonths[iSD].substring(0,3).toLowerCase();
var MonthPosition = DateToFormat.indexOf(ShortMonth);
	if(MonthPosition > -1){
	MONTH = iSD + 1;
		if(MonthPosition == 0){
		DAY = arrDate[1];
		YEAR = arrDate[2];
		}
	break;
	}
}

var strTemp = YEAR.toString();
if(strTemp.length==2){

	if(parseFloat(YEAR)>40){
	YEAR = "19" + YEAR;
	}
	else{
	YEAR = "20" + YEAR;
	}

}


	if(parseInt(MONTH)< 10 && MONTH.toString().length < 2){
	MONTH = "0" + MONTH;
	}
	if(parseInt(DAY)< 10 && DAY.toString().length < 2){
	DAY = "0" + DAY;
	}
	switch (FormatAs){
	case "dd/mm/yyyy":
	return DAY + "/" + MONTH + "/" + YEAR;
	case "mm/dd/yyyy":
	return MONTH + "/" + DAY + "/" + YEAR;
	case "dd/mmm/yyyy":
	return DAY + " " + arrMonths[MONTH -1].substring(0,3) + " " + YEAR;
	case "mmm/dd/yyyy":
	return arrMonths[MONTH -1].substring(0,3) + " " + DAY + " " + YEAR;
	case "dd/mmmm/yyyy":
	return DAY + " " + arrMonths[MONTH -1] + " " + YEAR;	
	case "mmmm/dd/yyyy":
	return arrMonths[MONTH -1] + " " + DAY + " " + YEAR;
	}

return DAY + "/" + strMONTH + "/" + YEAR;;

} //End Function


function getScreenX(formWidth)
{
	return (parseFloat(screen.width) - parseFloat(formWidth)) / 2;
}

function getScreenY(formHeight)
{
	return (parseFloat(screen.height) - parseFloat(formHeight)) / 2;
}


function OnlyNumbers(Choice)
{
		if (event.keyCode<48 || event.keyCode>57)
		{
			if(Choice==1)
			{
				event.keyCode=0;
			}
			else if(Choice==2)
			{
				if(event.keCode!=46)
				{
					event.keyCode=0;
				}
			}
		}
}