// Email validation script starts here 
function isValidEmail(email, required) {
    if (required==undefined) {   // if not specified, assume it's required
        required=true;
    }
    if (email==null) {
        if (required) {
            return false;
        }
        return true;
    }
    if (email.length==0) {  
        if (required) {
            return false;
        }
        return true;
    }
    if (! allValidChars(email)) {  // check to make sure all characters are valid
        return false;
    }
    if (email.indexOf("@") < 1) { //  must contain @, and it must not be the first character
        return false;
    } else if (email.lastIndexOf(".") <= email.indexOf("@")) {  // last dot must be after the @
        return false;
    } else if (email.indexOf("@") == email.length) {  // @ must not be the last character
        return false;
    }
	
    return true;
}

function allValidChars(email) {
  var parsed = true;
  var validchars = "abcdefghijklmnopqrstuvwxyz0123456789@.-_";
  for (var i=0; i < email.length; i++) {
    var letter = email.charAt(i).toLowerCase();
    if (validchars.indexOf(letter) != -1)
      continue;
    parsed = false;
    break;
  }
  return parsed;
}
// Email validation script Ends here 
// Trim function
String.prototype.trim = function() 
	{
		// skip leading and trailing whitespace and return everything in between
		return this.replace(/^\s*(\b.*\b|)\s*$/, "$1");
	}

function IsNumeric(strString) 
{ 
	var strValidChars = "0123456789"; // these are alloable chars
	var strChar; 
	var blnResult = true; 
	if (strString.length == 0) return false; 
	for (i = 0; i < strString.length && blnResult == true; i++) 
		{ 
			strChar = strString.charAt(i); 
			if (strValidChars.indexOf(strChar) == -1) 
				{ 
					blnResult = false; 
				} 
		} 
	return blnResult; 
}

function IsFloat(strString) 
{ 
	var strValidChars = "0123456789."; // these are alloable chars
	var strChar; 
	var blnResult = true; 
	if (strString.length == 0) return false; 
	for (i = 0; i < strString.length && blnResult == true; i++) 
		{ 
			strChar = strString.charAt(i); 
			if (strValidChars.indexOf(strChar) == -1) 
				{ 
					blnResult = false; 
				} 
		}
	if (strString.indexOf(".")!=-1 && (strString.indexOf(".") < 1 || strString.indexOf(".")== strString.length-1))
	{
		blnResult = false;
	}
	return blnResult; 
}



// check for delete
function checkdel()
{
	if(confirm("Are you sure to delete this Record?"))
		return true;
	else
		return false;	  
}
// check for status
function chkstat()
{
	if(confirm("Are you sure to change status of this Record?"))
		return true;
	else
		return false;	  
}

//Scrolling function
// Scrolling functions