//-------------------------------------------------------------------
// Trim functions
//   Returns string with whitespace trimmed
//-------------------------------------------------------------------
function LTrim(str){
	if (str==null){return null;}
	for(var i=0;str.charAt(i)==" ";i++);
	return str.substring(i,str.length);
	}
function RTrim(str){
	if (str==null){return null;}
	for(var i=str.length-1;str.charAt(i)==" ";i--);
	return str.substring(0,i+1);
	}
function Trim(str){return LTrim(RTrim(str));}
function LTrimAll(str) {
	if (str==null){return str;}
	for (var i=0; str.charAt(i)==" " || str.charAt(i)=="\n" || str.charAt(i)=="\t"; i++);
	return str.substring(i,str.length);
	}
function RTrimAll(str) {
	if (str==null){return str;}
	for (var i=str.length-1; str.charAt(i)==" " || str.charAt(i)=="\n" || str.charAt(i)=="\t"; i--);
	return str.substring(0,i+1);
	}
function TrimAll(str) {
	return LTrimAll(RTrimAll(str));
	}
//-------------------------------------------------------------------
// isNull(value)
//   Returns true if value is null
//-------------------------------------------------------------------
function isNull(val){return(val==null);}

//-------------------------------------------------------------------
// isBlank(value)
//   Returns true if value only contains spaces
//-------------------------------------------------------------------
function isBlank(val){
	if(val==null){return true;}
	for(var i=0;i<val.length;i++) {
		if ((val.charAt(i)!=' ')&&(val.charAt(i)!="\t")&&(val.charAt(i)!="\n")&&(val.charAt(i)!="\r")){return false;}
		}
	return true;
	}

//-------------------------------------------------------------------
// isInteger(value)
//   Returns true if value contains all digits
//-------------------------------------------------------------------
function isInteger(val){
	if (isBlank(val)){return false;}
	for(var i=0;i<val.length;i++){
		if(!isDigit(val.charAt(i))){return false;}
		}
	return true;
	}

//-------------------------------------------------------------------
// isNumeric(value)
//   Returns true if value contains a positive float value
//-------------------------------------------------------------------
function isNumeric(val){return(parseFloat(val,10)==(val*1));}
//-------------------------------------------------------------------
// isDigit(value)
//   Returns true if value is a 1-character digit
//-------------------------------------------------------------------
function isDigit(num) {
	if (num.length>1){return false;}
	var string="1234567890";
	if (string.indexOf(num)!=-1){return true;}
	return false;
	}

//-------------------------------------------------------------------
// setNullIfBlank(input_object)
//   Sets a form field to "" if it isBlank()
//-------------------------------------------------------------------
function setNullIfBlank(obj){if(isBlank(obj.value)){obj.value="";}}

//-------------------------------------------------------------------
// setFieldsToUpperCase(input_object)
//   Sets value of form field toUpperCase() for all fields passed
//-------------------------------------------------------------------
function setFieldsToUpperCase(){
	for(var i=0;i<arguments.length;i++) {
		arguments[i].value = arguments[i].value.toUpperCase();
		}
	}
//-----------------------------------------------------------------------------------------------------
// function to validate date 
//-----------------------------------------------------------------------------------------------------
function dateok(val) {


   if (val.length != 8) {
      return false;
   }

   var myDayStr   = val.substring(0, 2);
   var myMonthStr = val.substring(2, 4);
   var myYearStr  = val.substring(4, 8);


   if (myYearStr <= 1900) {
      return false;
   }


   if (myYearStr >= 2010) {
      return false;
   }

   var myFooMonthStr = myMonthStr - 1;
   var myMonth       = new Array('Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec'); 
   var myDateStr     = myDayStr + ' ' + myMonth[myFooMonthStr] + ' ' + myYearStr;

   var myDate = new Date();
   myDate.setFullYear( myYearStr, myFooMonthStr, myDayStr );

   if ( myDate.getMonth() != myFooMonthStr ) {
      return false;
   }
   return true;
}

//-----------------------------------------------------------------------------------------------------
// function to check special charecters in a string 
//-----------------------------------------------------------------------------------------------------
function validstr(val) {

var iChars = "!@#$%^&*()+=-[]\\\';,/{}|\":<>?1234567890";

  for (var i = 0; i < val.length; i++) {
  	if (iChars.indexOf(val.charAt(i)) != -1) {
  	return false;
  	}
  }
  return true;
} 

function validname(val) {

var iChars = "!@#$%^&*()+=-[]\\\';,/{}|\":<>?1234567890";

  for (var i = 0; i < val.length; i++) {
  	if (iChars.indexOf(val.charAt(i)) != -1) {
  	return false;
  	}
  }
  return true;
}
//-----------------------------------------------------------------------------------------------------
// function to check special charecters in address
//-----------------------------------------------------------------------------------------------------
function validaddr(val) {

var iChars = "!@#$%^&*()+=[]\\\';{}|\":<>?";

  for (var i = 0; i < val.length; i++) {
  	if (iChars.indexOf(val.charAt(i)) != -1) {
  	return false;
  	}
  }
  return true;
}

//-----------------------------------------------------------------------------------------------------