var d = document;
onload = function() {
    var viewport_height = (self.innerHeight) ? self.innerHeight : (document.documentElement && document.documentElement.clientHeight) ? document.documentElement.clientHeight : (document.body) ? document.body.clientHeight : 0;
    var page_height = d.getElementsByTagName('body')[0].offsetHeight;
    var ttl = d.getElementById('to_top_link');
    if (page_height < viewport_height) b_retour.style.visibility = 'hidden';
};

function NewWindow(mypage, myname, w, h, scroll) {
	var winl = (screen.width - w) / 2;
	var wint = (screen.height - h) / 2;
	winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',resizable,scrollbars'
	win = window.open(mypage, myname, winprops)
	if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
}

function getSelectedRadio(buttonGroup) {
   // returns the array number of the selected radio button or -1 if no button is selected
   if (buttonGroup[0]) { // if the button group is an array (one button is not an array)
      for (var i=0; i<buttonGroup.length; i++) {
         if (buttonGroup[i].checked) {
            return i
         }
      }
   } else {
      if (buttonGroup.checked) { return 0; } // if the one button is checked, return zero
   }
   // if we get to this point, no radio button is selected
   return -1;
} // Ends the "getSelectedRadio" function

function getSelectedRadioValue(buttonGroup) {
   // returns the value of the selected radio button or "" if no button is selected
   var i = getSelectedRadio(buttonGroup);
   if (i == -1) {
      return "";
   } else {
      if (buttonGroup[i]) { // Make sure the button group is an array (not just one button)
         return buttonGroup[i].value;
      } else { // The button group is just the one button, and it is checked
         return buttonGroup.value;
      }
   }
} // Ends the "getSelectedRadioValue" function


function getSelectedButton(buttonGroup){
	for (var i = 0; i < buttonGroup.length; i++) {
		if (buttonGroup[i].checked) {
			return i
		}
	}
	return 0
}

function getSelectedButton1(buttonGroup){
	alert(buttonGroup.length);
	for (var i = 0; i < buttonGroup.length; i++) {
		if (buttonGroup[i].checked) {
			return i
		}
	}
	return 99
}


function checkMail(str) {
	var verif = /^[a-zA-Z0-9\-\_]{1,}[a-zA-Z0-9\.\-\_]*[a-zA-Z0-9\-\_]{1,}@[a-zA-Z0-9]{1,}[a-zA-Z0-9\.\-\_]*[a-zA-Z0-9]{1,}[.][a-zA-Z]{2,4}$/;
	if(verif.test(str)) return true;
	else return false;
}

function emptyField(textObj)
{
	if (textObj.value.length == 0) return true;
	for (var i=0; i<textObj.value.length; ++i) {
		var ch = textObj.value.charAt(i);
		if (ch != ' ' && ch != '\t') return false;
	}
	return true;
}


function validateDate( strValue ) {
/************************************************
DESCRIPTION: Validates that a string contains only
    valid dates with 2 digit month, 2 digit day,
    4 digit year. Date separator can be ., -, or /.
    Uses combination of regular expressions and
    string parsing to validate date.
    Ex. mm/dd/yyyy or mm-dd-yyyy or mm.dd.yyyy


PARAMETERS:
   strValue - String to be tested for validity

RETURNS:
   True if valid, otherwise false.

REMARKS:
   Avoids some of the limitations of the Date.parse()

   method such as the date separator character.
*************************************************/
  var objRegExp = /^\d{4}(\-|\/|\.)\d{1,2}\1\d{1,2}$/

  //check to see if in correct format
  if(!objRegExp.test(strValue))
    return 1; //doesn't match pattern, bad date
  else{
    var strSeparator = strValue.substring(4,5) //find date separator
    var arrayDate = strValue.split(strSeparator); //split date into month, day, year
    //create a lookup for months not equal to Feb.
    var arrayLookup = { '01' : 31,'03' : 31, '04' : 30,'05' : 31,'06' : 30,'07' : 31,
                        '08' : 31,'09' : 30,'10' : 31,'11' : 30,'12' : 31}
    var intDay = parseInt(arrayDate[2]);

    //check if month value and day value agree
    if(arrayLookup[arrayDate[1]] != null) {
      if(intDay <= arrayLookup[arrayDate[1]] && intDay != 0)

        return 99; //found in lookup table, good date
    }

    //check for February
    var intYear = parseInt(arrayDate[0]);
    var intMonth = parseInt(arrayDate[1]);
    if( ((intYear % 4 == 0 && intDay <= 29) || (intYear % 4 != 0 && intDay <=28)) && intDay !=0)
      return 99; //Feb. had valid number of days
  }
  return 2; //any other values, bad date
}

function isEmailAddr(email)
{
  var result = false
  var theStr = new String(email)
  var index = theStr.indexOf("@");
  if (index > 0)
  {
    var pindex = theStr.indexOf(".",index);
    if ((pindex > index+1) && (theStr.length > pindex+1))
	result = true;
  }
  return result;
}

function isPosInteger (inputVal) {
	inputStr = inputVal.toString()
	for (var i=0; i<inputStr.length; i++) {
		var oneChar = inputStr.charAt(i);
		if (oneChar < "0" || oneChar > "9") {
			return false;
		}
	}
	return true;
}

function GeneratePassword(length) {

    if (parseInt(navigator.appVersion) <= 3) {
        alert("Sorry this only works in 4.0+ browsers");
        return true;
    }

    var sPassword = "";

    var noPunction = true;
    for (i=0; i < length; i++) {

        numI = getRandomNum();
        if (noPunction) { while (checkPunc(numI)) { numI = getRandomNum(); } }

        sPassword = sPassword + String.fromCharCode(numI);
    }


    return sPassword;
}

function getRandomNum() {

    // between 0 - 1
    var rndNum = Math.random()

    // rndNum from 0 - 1000
    rndNum = parseInt(rndNum * 1000);

    // rndNum from 33 - 127
    rndNum = (rndNum % 94) + 33;

    return rndNum;
}

function checkPunc(num) {

    if ((num >=33) && (num <=47)) { return true; }
    if ((num >=58) && (num <=64)) { return true; }
    if ((num >=91) && (num <=96)) { return true; }
    if ((num >=123) && (num <=126)) { return true; }

    return false;
}