function equal_fields_errors(form_obj){
	var prob = new Array();
	for (var i=0; i < form_obj.length; i++){
		var n = form_obj.elements[i].name;
		var t = form_obj.elements[i].type;

		if (n=='') continue;
		if (t!='password' && t!='text') continue;

		inputfield = form_obj.elements[n];
		if (inputfield.length>1){
			var v = inputfield[0].value;
			for (var j=1; j < inputfield.length; j++){
				if (v != inputfield[j].value){
					prob[prob.length] = form_obj.elements[i];
					continue;
				}
			}
		}
	}
	return prob;
}

function equal_fields_ok(form_obj,errorcolor){
	var errors = equal_fields_errors(form_obj);
	if (errors.length>0){
		if (errorcolor!=''){
			for (var i=0; i < errors.length; i++){
				errors[i].style.backgroundColor = errorcolor;
			}
		}
		return false;
	}else{
		return true;
	}
}

function CheckEmail(email) {
  if (typeof email == 'undefined') return false;
  if (window.RegExp) {
  	var strReg1 = /(\@.*\@)\|(\.\.)\|(^\.)\|(^\@)\|(\@$)\|(\.$)\|(\@\.)/;
   	//var strReg2 = "^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,4}\|[0-9]{1,3})(\]?)$";
    var strReg2 = /^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$/;
    var reg1 = new RegExp(strReg1);
    var reg2 = new RegExp(strReg2);
    if (!reg1.test(email) && reg2.test(email)){
       return true;
    }else{
       return false;
    }
  } else {
    if(str.indexOf("@") >= 0){
      return true;
    }else{
      return false;
    }
  }
  return false;
}

function CheckDate(strDate,strDatestyle) {
	//var strDatestyle = "US"; //United States date style
	//var strDatestyle = "EU";  //European date style
	var strDate;
	var strDateArray;
	var strDay;
	var strMonth;
	var strYear;
	var intday;
	var intMonth;
	var intYear;
	var booFound = false;
	var strSeparatorArray = new Array("-"," ","/",".");
	var intElementNr;
	var err = 0;

	if (strDate.length < 1) {
	return true;
	}
	for (intElementNr = 0; intElementNr < strSeparatorArray.length; intElementNr++) {
		if (strDate.indexOf(strSeparatorArray[intElementNr]) != -1) {
			strDateArray = strDate.split(strSeparatorArray[intElementNr]);
			if (strDateArray.length != 3) {
				err = 1;
				return false;
			}else {
				strDay = strDateArray[0];
				strMonth = strDateArray[1];
				strYear = strDateArray[2];
			}
			booFound = true;
	   	}
	}
	if (booFound == false) {
		if (strDate.length>5) {
			strDay = strDate.substr(0, 2);
			strMonth = strDate.substr(2, 2);
			strYear = strDate.substr(4);
	   	}
	}
	if (strYear.length == 2) {
		strYear = '20' + strYear;
	}
	// US style
	if (strDatestyle == "US") {
		strTemp = strDay;
		strDay = strMonth;
		strMonth = strTemp;
	}
	intday = parseInt(strDay, 10);
	if (isNaN(intday)) {
		err = 2;
		return false;
	}
	intMonth = parseInt(strMonth, 10);
	if (isNaN(intMonth)) { return false; }

	intYear = parseInt(strYear, 10);
	if (isNaN(intYear)) {
		err = 4;
		return false;
	}
	if (intMonth>12 || intMonth<1) {
		err = 5;
		return false;
	}
	if ((intMonth == 1 || intMonth == 3 || intMonth == 5 || intMonth == 7 || intMonth == 8 || intMonth == 10 || intMonth == 12) && (intday > 31 || intday < 1)) {
		err = 6;
		return false;
	}
	if ((intMonth == 4 || intMonth == 6 || intMonth == 9 || intMonth == 11) && (intday > 30 || intday < 1)) {
		err = 7;
		return false;
	}
	if (intMonth == 2) {
		if (intday < 1) {
			err = 8;
			return false;
		}
		if (LeapYear(intYear) == true) {
			if (intday > 29) {
				err = 9;
				return false;
			}
		}else{
			if (intday > 28) {
				err = 10;
				return false;
			}
		}
	}
	return true;
}

function LeapYear(intYear) {
	if (intYear % 100 == 0) {
		if (intYear % 400 == 0) { return true; }
	}else {
		if ((intYear % 4) == 0) { return true; }
	}
	return false;
}

function opacity(id, opacStart, opacEnd, millisec) {
    //speed for each frame
    var speed = Math.round(millisec / 100);
    var timer = 0;
    var step = 1;

    //determine the direction for the blending, if start and end are the same nothing happens
    if(opacStart > opacEnd) {
        for(i = opacStart; i >= opacEnd; i = i - step) {
            setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
            timer++;
        }
    } else if(opacStart < opacEnd) {
        for(i = opacStart; i <= opacEnd; i = i + step){
            setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
            timer++;
        }
    }
}

function changeOpac(opacity, id) {
    var object = document.getElementById(id).style;
    object.opacity = (opacity / 100);
    object.MozOpacity = (opacity / 100);
    object.KhtmlOpacity = (opacity / 100);
    object.filter = "alpha(opacity=" + opacity + ")";
}