function SetFocus(TargetFormName) {
  var target = 0;
  if (TargetFormName != "") {
    for (i=0; i<document.forms.length; i++) {
      if (document.forms[i].name == TargetFormName) {
        target = i;
        break;
      }
    }
  }

  var TargetForm = document.forms[target];

  for (i=0; i<TargetForm.length; i++) {
    if ( (TargetForm.elements[i].type != "image") && (TargetForm.elements[i].type != "hidden") && (TargetForm.elements[i].type != "reset") && (TargetForm.elements[i].type != "submit") ) {
      TargetForm.elements[i].focus();

      if ( (TargetForm.elements[i].type == "text") || (TargetForm.elements[i].type == "password") ) {
        TargetForm.elements[i].select();
      }

      break;
    }
  }
}

function RemoveFormatString(TargetElement, FormatString) {
  if (TargetElement.value == FormatString) {
    TargetElement.value = "";
  }

  TargetElement.select();
}

function CheckDateRange(from, to) {
  if (Date.parse(from.value) <= Date.parse(to.value)) {
    return true;
  } else {
    return false;
  }
}

function IsValidDate(DateToCheck, FormatString) {
  var strDateToCheck;
  var strDateToCheckArray;
  var strFormatArray;
  var strFormatString;
  var strDay;
  var strMonth;
  var strYear;
  var intday;
  var intMonth;
  var intYear;
  var intDateSeparatorIdx = -1;
  var intFormatSeparatorIdx = -1;
  var strSeparatorArray = new Array("-"," ","/",".");
  var strMonthArray = new Array("jan","feb","mar","apr","may","jun","jul","aug","sep","oct","nov","dec");
  var intDaysArray = new Array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);

  strDateToCheck = DateToCheck.toLowerCase();
  strFormatString = FormatString.toLowerCase();

  if (strDateToCheck.length != strFormatString.length) {
    return false;
  }

  for (i=0; i<strSeparatorArray.length; i++) {
    if (strFormatString.indexOf(strSeparatorArray[i]) != -1) {
      intFormatSeparatorIdx = i;
      break;
    }
  }

  for (i=0; i<strSeparatorArray.length; i++) {
    if (strDateToCheck.indexOf(strSeparatorArray[i]) != -1) {
      intDateSeparatorIdx = i;
      break;
    }
  }

  if (intDateSeparatorIdx != intFormatSeparatorIdx) {
    return false;
  }

  if (intDateSeparatorIdx != -1) {
    strFormatArray = strFormatString.split(strSeparatorArray[intFormatSeparatorIdx]);
    if (strFormatArray.length != 3) {
      return false;
    }

    strDateToCheckArray = strDateToCheck.split(strSeparatorArray[intDateSeparatorIdx]);
    if (strDateToCheckArray.length != 3) {
      return false;
    }

    for (i=0; i<strFormatArray.length; i++) {
      if (strFormatArray[i] == 'mm' || strFormatArray[i] == 'mmm') {
        strMonth = strDateToCheckArray[i];
      }

      if (strFormatArray[i] == 'dd') {
        strDay = strDateToCheckArray[i];
      }

      if (strFormatArray[i] == 'yyyy') {
        strYear = strDateToCheckArray[i];
      }
    }
  } else {
    if (FormatString.length > 7) {
      if (strFormatString.indexOf('mmm') == -1) {
        strMonth = strDateToCheck.substring(strFormatString.indexOf('mm'), 2);
      } else {
        strMonth = strDateToCheck.substring(strFormatString.indexOf('mmm'), 3);
      }

      strDay = strDateToCheck.substring(strFormatString.indexOf('dd'), 2);
      strYear = strDateToCheck.substring(strFormatString.indexOf('yyyy'), 2);
    } else {
      return false;
    }
  }

  if (strYear.length != 4) {
    return false;
  }

  intday = parseInt(strDay, 10);
  if (isNaN(intday)) {
    return false;
  }
  if (intday < 1) {
    return false;
  }

  intMonth = parseInt(strMonth, 10);
  if (isNaN(intMonth)) {
    for (i=0; i<strMonthArray.length; i++) {
      if (strMonth == strMonthArray[i]) {
        intMonth = i+1;
        break;
      }
    }
    if (isNaN(intMonth)) {
      return false;
    }
  }
  if (intMonth > 12 || intMonth < 1) {
    return false;
  }

  intYear = parseInt(strYear, 10);
  if (isNaN(intYear)) {
    return false;
  }
  if (IsLeapYear(intYear) == true) {
    intDaysArray[1] = 29;
  }

  if (intday > intDaysArray[intMonth - 1]) {
    return false;
  }

  return true;
}

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

  return false;
}

function wOpen(pURL, pName, w, h, scroll, text, specialSettings){
	xLeft=(screen.width)?(screen.width-w)/2:0;
	xTop=(screen.height)?(screen.height-h)/2:0;
	xSettings = 'height='+h+',width='+w+',top='+xTop+',left='+xLeft+',scrollbars='+scroll+specialSettings
	hwnd = window.open(pURL,pName,xSettings);
	if(hwnd.window.focus){hwnd.window.focus();}
	if(text != "") hwnd.document.write(text);
	hwnd.document.close();
	return hwnd;
}

var autoSwapping = false;
function swpImg(val, auto){
	if (auto){
		for (j=0; j < imgCount; j++){
			if (!images[j].complete) return;
		}
	}
	if (!auto && autoSwapping) autoSwapping = false;

	imgNow+=val;
        if (imgNow == imgCount) imgNow = 0;
        	else if (imgNow < 0) imgNow = imgCount-1;

	document.imgProd.src = images[imgNow].src;
	document.imgProd.alt = images[imgNow].alt;
	document.imgProd.width = images[imgNow].width;
	document.imgProd.height = images[imgNow].height;
}

function autoSwap(){
	if(autoSwapping){
		swpImg(1, true);
		setTimeout("autoSwap()", 2000);
	}
}

var zoomHwnd;
function zoomImg(title){

	if (zoomHwnd){
		zoomHwnd.close();
	}
	if(bigImages[imgNow].complete){
		zoomHwnd = wOpen("", "", bigImages[imgNow].width+20, bigImages[imgNow].height+5, "yes",
			"<html><head><title>" + title + " </title></head><body leftmargin=0 topmargin=0 rightmargin=0 bottommargin=0 marginheight=0 marginwidth=0><table cellpadding=0 cellspacing=0 border=0 width=100% height=100%><tr align=center valign=middle><td><img src="+bigImages[imgNow].src+"></td></tr></table></body></html>");
	}else{
		zoomHwnd = wOpen("", "", 530, 530, "yes",
			"<html><head><title>" + title + " </title></head><body leftmargin=0 topmargin=0 rightmargin=0 bottommargin=0 marginheight=0 marginwidth=0><table cellpadding=0 cellspacing=0 border=0 width=100% height=100%><tr align=center valign=middle><td><img src="+bigImgPath[imgNow]+"></td></tr></table></body></html>");
	}
}