//****************** This function checks for an empty field
function isEmpty(frmField,fldName) 
{
	/* checks for empty value of a field.
	*/
	var fld = frmField.value;
	var ctr=0;
	var len = fld.length;

	for(i=0;i<=len;i++) 
	{
		if (fld.charAt(i)==" ") ctr++;
	}
	if (len==ctr) 
	{
		alert(fldName + " can not be blank.");
		frmField.focus();
		return true;
	}
	return false;
}

function trim(str) 
{ 
	var myValue = new String(str);
	var Length_of_value = myValue.length;
	var newValue="";
	for (i=0;i<Length_of_value;i++)
	if(myValue.charAt(i)!=" ")
	newValue += myValue.charAt(i);
	return newValue;
}

function isAlpha(frmField,fldName)
 {
	var AlphaSymbol = new String("\"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ");
	//AlphaSymbol = AlphaSymbol + "\r" + "\n" + "\f";
	el = trim(frmField.value);
	//el = frmField.value;
    for(i=0;i<el.length;i++)
    	if (AlphaSymbol.indexOf(el.charAt(i))==-1) {
    		alert(fldName + " must be english characters only.");
    		frmField.focus();
    		frmField.select();
    		return false;
    		}
    return true;
}

function isAlphaNum(frmField,fldName)
 {
	var AlphaSymbol = new String("\"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890-_");
	AlphaSymbol = AlphaSymbol + "\r" + "\n" + "\f";
	el = trim(frmField.value);
	//el = frmField.value;
    for(i=0;i<el.length;i++)
    	if (AlphaSymbol.indexOf(el.charAt(i))==-1) {
    		alert(fldName + " must be alphanumeric only.");
    		frmField.focus();
    		frmField.select();
    		return false;
    		}
    return true;
}

//****************** This function checks for a valid number
function isNum(frmField,fldName) 
{
	var NumSymbol = new String("1234567890");
	el = frmField.value;
	for(i=0;i<el.length;i++)
	if (NumSymbol.indexOf(el.charAt(i))==-1) 
	{
		alert(fldName + " must be numeric.");
		frmField.focus;
		frmField.select();
		return false;
	}
	return true;

}

//****************** This function checks for an empty combo field
function isSelEmpty(frmField,fldName)
	 {
		var fld = frmField[frmField.selectedIndex].value;
		var ctr=0;
		var len = fld.length;
		for(i=0;i<=len;i++) {
		if (fld.charAt(i)==" ")
		{
			 ctr++;
		}
	 }
		if (len==ctr)
		{
			alert(fldName + " is required.");
			frmField.focus();
			return true;
		}
		return false;
	 }

function alltrim(str1)
	{
		var myValue = new String(str1);
		var Length_of_value = myValue.length;
		var newValue="";
		for (i=0;i<Length_of_value;i++)
		if ((myValue.charAt(i)!=" ") && (myValue.charAt(i)!="\r") && (myValue.charAt(i)!="\n"))
		newValue += myValue.charAt(i);
		return newValue;
	}

// Function to Check a Valid Email

function validateEmail(strEmail) 
{ 
		var at="@";
        var dot=".";
        var lat=strEmail.indexOf(at);
        var lstr=strEmail.length;
        var ldot=strEmail.indexOf(dot);
        if (strEmail.indexOf(at)==-1)
        {
           return false ;
        }
        if (strEmail.indexOf(at)==-1 || strEmail.indexOf(at)==0 || strEmail.indexOf(at)==lstr)
        {
		   return false ;
        } 
        if (strEmail.indexOf(dot)==-1 || strEmail.indexOf(dot)==0 || strEmail.indexOf(dot)==lstr)
        {                     
           return false;
        } 
        if (strEmail.indexOf(at,(lat+1))!=-1)
        {
           return false;
        } 
        if (strEmail.substring(lat-1,lat)==dot || strEmail.substring(lat+1,lat+2)==dot)
        { 
           return false ;
        } 
	    if (strEmail.indexOf(dot,(lat+2))==-1)
        { 
                     return false ;
             }
             if (strEmail.indexOf(" ")!=-1)
	         { 
                     return false;
             }
      									
        return true;
        
  } 

function emailCheck (emailStr) 
{
	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 must be valid!")
		return false
	}
	var user=matchArray[1]
	var domain=matchArray[2]

// See if "user" is valid 
	if (user.match(userPat)==null) 
	{
		// user is not valid
		alert(" Email Address must be valid!")
		return false;
	}

	var IPArray=domain.match(ipDomainPat)
	if (IPArray!=null) 
	{
		// this is an IP address
		for (var i=1;i<=4;i++) 
			{
				if (IPArray[i]>255) {
				alert(" Email Address must be valid!")
				return false
			}
    }
    return true
}

// Domain is symbolic name
	var domainArray=domain.match(domainPat)
	if (domainArray==null)	
	{
		alert(" Email Address must be valid!")
		return false
	}

	var atomPat=new RegExp(atom,"g")
	var domArr=domain.match(atomPat)
	var len=domArr.length
	if (domArr[domArr.length-1].length<2 || domArr[domArr.length-1].length>3) 
	{
		alert("The address must end in a three-letter domain, or two letter country.")
		return false
	}

	if (len<2)	
	{
		alert(" Email Address is invalid.")
		return false
	}	

	return true;
}

function isValidDate(dateMM, dateDD, dateYYYY, fld)
{	var ar = new Array(12);
	var now = new Date();
	var theDate = new Date(dateYYYY, dateMM-1, dateDD);
			
	ar[1] = 31; // January
	ar[2] = (dateYYYY % 4 == 0) ? 29 : 28; // February
	ar[3] = 31; // March
	ar[4] = 30; // April
	ar[5] = 31; // May
	ar[6] = 30; // June
	ar[7] = 31; // July
	ar[8] = 31; // August
	ar[9] = 30; // September
	ar[10] = 31; // October
	ar[11] = 30; // November
	ar[12] = 31; // December
		
	if (dateDD > ar[parseInt(dateMM,10)])
	{	
		alert(fld + " is invalid!")
		return false;
	}
	
	if (theDate < now)
	{
		alert(fld + " should not be earlier than today.")
		return false;
	}
		
	return true;
}

// Function To Check Minimam Length of Password(20/Nov.2006)

function checkLength(strPassword, frmName)
{ 
  
	var fld = strPassword.value;
	
	var len = fld.length;
	
	if (len<4 || len>8) 
	{
		alert(frmName + " can have minimum 4 and maximum 8 characters");
		strPassword.focus();
		return true;
	}
	
	return false;
}

// Function to Set Focus On PageLoad 



//  End