/*
  $Id: general.js,v 1.3 2003/02/10 22:30:55 hpdl Exp $

  osCommerce, Open Source E-Commerce Solutions
  http://www.oscommerce.com

  Copyright (c) 2003 osCommerce

  Released under the GNU General Public License
*/

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 showInfo(event,objId,objId_parent){
    var tmpObj=document.getElementById(objId);
    var actelement=document.getElementById(objId_parent);
    var tt_s="";
    var tt_z="";
    if(tmpObj){
        var x_pos;
        var ys_pos;
        var objInfoElement;
        if(navigator.appName == "Netscape"){
            x_pos=parseInt(event.pageX);
            y_pos=parseInt(event.pageY);
            /*x_pos=parseInt(event.x);
            y_pos=parseInt(event.y);*/
            x_offset=0;
            y_offset=0;
            while (actelement) {
              /* alert( actelement.tagname + "/" + actelement.offsetTop);*/
              tt_s = tt_s + actelement.tagName + " / ";
              tt_s = tt_s + actelement.offsetTop + "  ";
              /*document.write(actelement.tagName + "<br>");
              document.write(actelement.offsetTop + "<br>");*/
              x_offset = x_offset + actelement.offsetLeft;
              y_offset = y_offset + actelement.offsetTop;
              actelement = actelement.offsetParent;
            }
            /*document.write(x_pos + "<br>");
            document.write(y_pos + "<br>");*/

            /*alert(tt_s + "/" + x_pos + " / " + y_pos + "Offset " + x_offset + " / " + y_offset + "Scrolltop / " + document.body.scrollTop);*/
            x_pos =  x_offset;

            y_pos = y_offset  + (y_pos - document.body.scrollTop);
        }
        else{
            var x_offset=document.getElementById("container").offsetLeft;
            x_pos=parseInt(event.x + document.body.scrollLeft + x_offset);
            y_pos=parseInt(event.y + document.body.scrollTop);
/*            x_pos=parseInt(event.screenX);
            y_pos=parseInt(event.screenY);
            alert(x_pos); */

        }
        var objBody = document.getElementsByTagName("body").item(0);
        if(!document.getElementById("infoElement")){
            objInfoElement = document.createElement("div");
            objInfoElement.setAttribute('id','infoElement');
            objBody.appendChild(objInfoElement);
            objInfoElement.className="infoDiv";
            objInfoElement.style.position="absolute";
            objInfoElement.innerHTML=tmpObj.innerHTML;
        }
        else{
            objInfoElement=document.getElementById("infoElement");
        }
        if(objInfoElement){         
            x_pos = x_pos - 320;  /*objInfoElement.offsetwidth*/
            objInfoElement.style.left=(x_pos)+"px";
            var w_height = objInfoElement.offsetHeight;
            if ((y_pos + w_height - document.body.scrollTop + 10) > window.innerHeight) {
                              /*alert( y_pos + " / " + w_height + " / " + document.body.scrollTop + " / " + window.innerHeight);*/
               y_pos = (window.innerHeight - w_height) - 10 + + document.body.scrollTop;
               /*alert( y_pos + " / " + w_height + " / " + document.body.scrollTop + " / " + window.innerHeight);*/
            }
            /*alert( y_pos + " / " + w_height + " / " + document.body.scrollTop + " / " + window.innerHeight);*/
            objInfoElement.style.top=(y_pos+10 )+"px";
        }
    }
}

function clearInfo(objId){
    var tmpObj=document.getElementById("infoElement");
    if(tmpObj){
        var objBody = document.getElementsByTagName("body").item(0);
        objBody.removeChild(tmpObj);
    }
}