var look;
var IE = document.all?true:false;
myonb=new Array();
look=new Array();
look[0]='toolbar=no,location=no,directories=no,status=no,scrollbars=yes,resizable=yes,copyhistory=no,';
look[1]='toolbar=no,location=no,directories=no,status=no,scrollbars=no,resizable=no,copyhistory=no,';
look[2]='toolbar=no,location=no,directories=no,status=no,scrollbars=yes,resizable=yes,copyhistory=no,fullscreen,';

function onw(path,name,w,h,index) // path of content, name of the window, width, height, index in array look
{
	centerX = (screen.availWidth-w+20)/2;
	centerY = (screen.availHeight-h)/2;
	myonb[name]=window.open(path,name,look[index]+'width='+(w+40)+',height='+h);
	myonb[name].moveTo(centerX,centerY);
	myonb[name].focus();
}

function zoomout(path){
	onw(path,'Viewer',600,500,0);
}



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

function checkValidChar(str){
	var iChars = "~`!@#$%^&*()+=-[]\\\';,./{}|\":<>?";
  	for (var i = 0; i < str.length; i++) {
  		if (iChars.indexOf(str.charAt(i)) != -1) {
  			return false;
  		}
	}
	return true;
}

function checkValidEmail(str){
	var x = str;
	var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	if (filter.test(x)) return true;
	else return false;
}

function checkNotVietNamese(str){
	var iChars = 'àáảãạâầấẩậăằắẳẵặèéẻẽẹêềếểễệìíỉĩịùúủũụòóỏõọôồốổỗộơờớởỡợ';
	for (var i = 0; i < str.length; i++){
		if (iChars.indexOf(str.charAt(i)) > -1){
  		return false;
  	}
	}
	return true;
}

function checkValidPhoneNumber(str){
	var iChars = '0123456789-()';
	for (var i = 0; i < str.length; i++){
		if (iChars.indexOf(str.charAt(i)) == -1){
  		return false;
  	}
	}
	return true;
}

function checkValidDate(dateStr) {
    var slash1 = dateStr.indexOf("/");
    if (slash1 == -1) { slash1 = dateStr.indexOf("-"); }
    if (slash1 == -1) { return false; }
    var dateMonth = dateStr.substring(0, slash1)
    var dateMonthAndYear = dateStr.substring(slash1+1, dateStr.length);
    var slash2 = dateMonthAndYear.indexOf("/");
    if (slash2 == -1) { slash2 = dateMonthAndYear.indexOf("-"); }
    if (slash2 == -1) { return false; }
    var dateDay = dateMonthAndYear.substring(0, slash2);
    var dateYear = dateMonthAndYear.substring(slash2+1, dateMonthAndYear.length);
    if ( (dateMonth == "") || (dateDay == "") || (dateYear == "") ) { return false; }
    for (var x=0; x < dateMonth.length; x++) {
        var digit = dateMonth.substring(x, x+1);
        if ((digit < "0") || (digit > "9")) { return false; }
    }
    var numMonth = 0;
    for (var x=0; x < dateMonth.length; x++) {
        digit = dateMonth.substring(x, x+1);
        numMonth *= 10;
        numMonth += parseInt(digit);
    }
    if ((numMonth <= 0) || (numMonth > 12)) { return false; }
    for (var x=0; x < dateDay.length; x++) {
        digit = dateDay.substring(x, x+1);
        if ((digit < "0") || (digit > "9")) { return false; }
    }
    var numDay = 0;
    for (var x=0; x < dateDay.length; x++) {
        digit = dateDay.substring(x, x+1);
        numDay *= 10;
        numDay += parseInt(digit);
    }
    if ((numDay <= 0) || (numDay > 31)) { return false; }
    if ((numMonth == 2) && (numDay > 29)) { return false; }
    if ((numMonth == 4) || (numMonth == 6) || (numMonth == 9) || (numMonth == 11)) {
        if (numDay > 30) { return false; }
    }
    for (var x=0; x < dateYear.length; x++) {
        digit = dateYear.substring(x, x+1);
        if ((digit < "0") || (digit > "9")) { return false; }
    }
    var numYear = 0;
    for (var x=0; x < dateYear.length; x++) {
        digit = dateYear.substring(x, x+1);
        numYear *= 10;
        numYear += parseInt(digit);
    }
    if ( dateYear.length != 4 ) { return false; }
    if ((numYear <= 1900) || (numYear > 9999)) { return false; }
    if ((numMonth == 2) && (numDay == 29)) {
        var div4 = numYear % 4;
        var div100 = numYear % 100;
        var div400 = numYear % 400;
        // if not divisible by 4, then not a leap year so Feb 29 is invalid
        if (div4 != 0) { return false; }
        if ((div100 == 0) && (div400 != 0)) { return false; }
    }
    return true;
}