function checkForspaces(strVal)
{
 if(strVal.indexOf(" ") == -1)
  return false;
 else 
  return true;
}

function checkForallspaces(strVal)
{
 if(strVal.length == 0)
  return false;
 
 var result = true;
 for (var i=0; i < strVal.length; i++)
 {
   if(strVal.substring(i,i+1) != ' ')
    result = false;
 }
 return result;
}

function checkForlength(strVal,wantLen)
{
 if(strVal.length < wantLen)
  return false;
 else 
  return true;
}

function checkForexactlength(strVal,wantLen)
{
 if(strVal.length != wantLen)
  return false;
 else 
  return true;
}

function checkForemptyfield(strVal)
{
  if((checkForallspaces(strVal)) || (!checkForlength(strVal,1))) 
   return true;
  else
   return false; 
}

// Get value for a Group of RadioButton objects
function radioValue(radioObject)
{
  for(var i = 0; i < radioObject.length; i++)
   if(radioObject[i].checked)
     return radioObject[i].value;
}

// Set selected value for a DropDownList
function SetDropDownListSelectedValue(listObject, selectedValue)
{
  listObject.selectedIndex = 0;
  for(var i = 0; i < listObject.length; i++)
  {
    if (selectedValue != null)
        if (listObject.options[i].value == selectedValue)  
            listObject.selectedIndex = i;    
  }
}

// Generic positive number decimal formatting function
function format (expr, decplaces) {
	
	// raise incoming value by power of 10 times the number of decimal places; round to an integer; convert to a string
	var str = "" + Math.round (eval(expr) * Math.pow(10,decplaces))
	
	// pad small value strings with zeros to the left of rounded number
	while (str.length <= decplaces) {
	 str = "0" + str
	}
	
	// establish location of decimal point
	var decpoint = str.length - decplaces
	
	// ---assemble final result from: (a) the string up to the position of the decimal point; (b) the decimal point; and (c) the balance of the string. Return finished product.
	if(decplaces > 0)
	 return str.substring(0,decpoint) + "." + str.substring(decpoint,str.length);
	else 
	 return str.substring(0,decpoint) + str.substring(decpoint,str.length);
}

function dollarize (expr) {
    return "$" + commaSplit(TrimString(format(expr,2)));    
}

function decimaldollarize (expr,decimals) {
    return "$" + commaSplit(TrimString(format(expr,decimals)));    
}

function commaSplit(expr)
{
 if (isNaN(expr) || expr == "") 
  return expr;
 else 
  {
  var rxSplit = new RegExp('([0-9])([0-9][0-9][0-9][,.])');
  var arrNumber = expr.split('.');
  arrNumber[0] += '.';
  
  do 
   {
   arrNumber[0] = arrNumber[0].replace(rxSplit, '$1,$2');
   } while (rxSplit.test(arrNumber[0]));

  if (arrNumber.length > 1) 
   {
   return arrNumber.join('');
   }
  else 
  {
  return arrNumber[0].split('.')[0];
  }
 }
}

function validateCreditCard(cardNumber,cardType,cardMonth,cardYear)
{
 
 if( cardNumber.length == 0 )
 {
  alert("Please enter a valid card number.");
  return false;				
 }
 
 for( var i = 0; i < cardNumber.length; ++i )
 {
  var c = cardNumber.charAt(i);
  
  if( c < '0' || c > '9' )
  {
   alert("Please enter a valid card number. Use only digits. do not use spaces or hyphens.");
   return false;
  }
 }
  
 var length = cardNumber.length;
 
 switch( cardType )
 {
   case 'A':
  
    if( length != 15 )
    {
     alert("Please enter a valid American Express Card number.");
     return false;
    }
   
    var prefix = parseInt( cardNumber.substring(0,2));

    if( prefix != 34 && prefix != 37 )
    {
     alert("Please enter a valid American Express Card number.");
     return false;
    }
   break;
  
   case 'D':


    if( length != 16 )
    {
     alert("Please enter a valid Discover Card number.");
     return false;
    }
    
    var prefix = parseInt( cardNumber.substring(0,4));

    if( prefix != 6011 )
    {
     alert("Please enter a valid Discover Card number.");
     return false;
    }
   break;
   
   case 'M':

    if( length != 16 )
    {
     alert("Please enter a valid MasterCard number.");
     return false;
    }
    
    var prefix = parseInt( cardNumber.substring(0,2));

    if( prefix < 51 || prefix > 55)
    {
     alert("Please enter a valid MasterCard Card number.");
     return false;
    }
   break;
   
   case 'V':

    if( length != 16 && length != 13 )
    {
     alert("Please enter a valid Visa Card number.");
     return false;
    }
    
    var prefix = parseInt( cardNumber.substring(0,1));

    if( prefix != 4 )
    {
     alert("Please enter a valid Visa Card number.");
     return false;
    }
   break;
   
   default:
    alert("Please enter a valid Card Type.");
    return false;
   break;
 }
    
 if( !mod10( cardNumber ) )
  {
   alert("Sorry! this is not a valid credit card number.");
   return false;
  }
    
 if( expired( cardMonth, cardYear ) )
  {
   alert("Sorry! The expiration date you have entered would make this card invalid.");
   return false;
  }
 return true;
}

function mod10( cardNumber )
{ 
 var ar = new Array( cardNumber.length );
 var i = 0,sum = 0;
 for( i = 0; i < cardNumber.length; ++i )
 {
  ar[i] = parseInt(cardNumber.charAt(i));
 }
 
 for( i = ar.length -2; i >= 0; i-=2 )
 { 
 ar[i] *= 2;							 
 if( ar[i] > 9 )
  ar[i]-=9;			 
 }										 

 for( i = 0; i < ar.length; ++i )
 {
  sum += ar[i];						 
 }
 
 return (((sum%10)==0)?true:false);	 	
}

    
function expired( month, year ) 
{
 var now = new Date();							
 var expiresIn = new Date(year,month,0,0,0);		
 expiresIn.setMonth(expiresIn.getMonth()+1);		
 
 if( now.getTime() < expiresIn.getTime() )
  return false;
 
 return true;									
}


function ValidDate( month, day, year ) 
{
 var now = new Date();							
 var expiresIn = new Date("20" + year,month -1,day -1,0,0,0);		

 if( now.getTime() >= expiresIn.getTime() )
  return false;
 
 return true;									
}

function TrimString(sInString) {
  sInString = sInString.replace( /^\s+/g, "" );// strip leading
  return sInString.replace( /\s+$/g, "" );// strip trailing
}

function Win(URL, Width, Height)
{
  window.open(URL, "", "width=" + Width + ", height=" + Height + ", location=no, menubar=no, status=no, toolbar=no, scrollbars=yes, resizable=yes");
}

/**
    if (echeck(emailID.value)==false)
    {
      bla bla bla
    }
 */
function echeck(str) {

		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    return false
		 }

 		 return true					
	}