//v1.7
// Flash Player Version Detection
// Detect Client Browser type
// Copyright 2005-2007 Adobe Systems Incorporated.  All rights reserved.
var isIE  = (navigator.appVersion.indexOf("MSIE") != -1) ? true : false;
var isWin = (navigator.appVersion.toLowerCase().indexOf("win") != -1) ? true : false;
var isOpera = (navigator.userAgent.indexOf("Opera") != -1) ? true : false;

function ControlVersion()
{
	var version;
	var axo;
	var e;

	// NOTE : new ActiveXObject(strFoo) throws an exception if strFoo isn't in the registry

	try {
		// version will be set for 7.X or greater players
		axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.7");
		version = axo.GetVariable("$version");
	} catch (e) {
	}

	if (!version)
	{
		try {
			// version will be set for 6.X players only
			axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.6");
			
			// installed player is some revision of 6.0
			// GetVariable("$version") crashes for versions 6.0.22 through 6.0.29,
			// so we have to be careful. 
			
			// default to the first public version
			version = "WIN 6,0,21,0";

			// throws if AllowScripAccess does not exist (introduced in 6.0r47)		
			axo.AllowScriptAccess = "always";

			// safe to call for 6.0r47 or greater
			version = axo.GetVariable("$version");

		} catch (e) {
		}
	}

	if (!version)
	{
		try {
			// version will be set for 4.X or 5.X player
			axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.3");
			version = axo.GetVariable("$version");
		} catch (e) {
		}
	}

	if (!version)
	{
		try {
			// version will be set for 3.X player
			axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.3");
			version = "WIN 3,0,18,0";
		} catch (e) {
		}
	}

	if (!version)
	{
		try {
			// version will be set for 2.X player
			axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash");
			version = "WIN 2,0,0,11";
		} catch (e) {
			version = -1;
		}
	}
	
	return version;
}

// JavaScript helper required to detect Flash Player PlugIn version information
function GetSwfVer(){
	// NS/Opera version >= 3 check for Flash plugin in plugin array
	var flashVer = -1;
	
	if (navigator.plugins != null && navigator.plugins.length > 0) {
		if (navigator.plugins["Shockwave Flash 2.0"] || navigator.plugins["Shockwave Flash"]) {
			var swVer2 = navigator.plugins["Shockwave Flash 2.0"] ? " 2.0" : "";
			var flashDescription = navigator.plugins["Shockwave Flash" + swVer2].description;
			var descArray = flashDescription.split(" ");
			var tempArrayMajor = descArray[2].split(".");			
			var versionMajor = tempArrayMajor[0];
			var versionMinor = tempArrayMajor[1];
			var versionRevision = descArray[3];
			if (versionRevision == "") {
				versionRevision = descArray[4];
			}
			if (versionRevision[0] == "d") {
				versionRevision = versionRevision.substring(1);
			} else if (versionRevision[0] == "r") {
				versionRevision = versionRevision.substring(1);
				if (versionRevision.indexOf("d") > 0) {
					versionRevision = versionRevision.substring(0, versionRevision.indexOf("d"));
				}
			}
			var flashVer = versionMajor + "." + versionMinor + "." + versionRevision;
		}
	}
	// MSN/WebTV 2.6 supports Flash 4
	else if (navigator.userAgent.toLowerCase().indexOf("webtv/2.6") != -1) flashVer = 4;
	// WebTV 2.5 supports Flash 3
	else if (navigator.userAgent.toLowerCase().indexOf("webtv/2.5") != -1) flashVer = 3;
	// older WebTV supports Flash 2
	else if (navigator.userAgent.toLowerCase().indexOf("webtv") != -1) flashVer = 2;
	else if ( isIE && isWin && !isOpera ) {
		flashVer = ControlVersion();
	}	
	return flashVer;
}

// When called with reqMajorVer, reqMinorVer, reqRevision returns true if that version or greater is available
function DetectFlashVer(reqMajorVer, reqMinorVer, reqRevision)
{
	versionStr = GetSwfVer();
	if (versionStr == -1 ) {
		return false;
	} else if (versionStr != 0) {
		if(isIE && isWin && !isOpera) {
			// Given "WIN 2,0,0,11"
			tempArray         = versionStr.split(" "); 	// ["WIN", "2,0,0,11"]
			tempString        = tempArray[1];			// "2,0,0,11"
			versionArray      = tempString.split(",");	// ['2', '0', '0', '11']
		} else {
			versionArray      = versionStr.split(".");
		}
		var versionMajor      = versionArray[0];
		var versionMinor      = versionArray[1];
		var versionRevision   = versionArray[2];

        	// is the major.revision >= requested major.revision AND the minor version >= requested minor
		if (versionMajor > parseFloat(reqMajorVer)) {
			return true;
		} else if (versionMajor == parseFloat(reqMajorVer)) {
			if (versionMinor > parseFloat(reqMinorVer))
				return true;
			else if (versionMinor == parseFloat(reqMinorVer)) {
				if (versionRevision >= parseFloat(reqRevision))
					return true;
			}
		}
		return false;
	}
}

function AC_AddExtension(src, ext)
{
  if (src.indexOf('?') != -1)
    return src.replace(/\?/, ext+'?'); 
  else
    return src + ext;
}

function AC_Generateobj(objAttrs, params, embedAttrs) 
{ 
  var str = '';
  if (isIE && isWin && !isOpera)
  {
    str += '<object ';
    for (var i in objAttrs)
    {
      str += i + '="' + objAttrs[i] + '" ';
    }
    str += '>';
    for (var i in params)
    {
      str += '<param name="' + i + '" value="' + params[i] + '" /> ';
    }
    str += '</object>';
  }
  else
  {
    str += '<embed ';
    for (var i in embedAttrs)
    {
      str += i + '="' + embedAttrs[i] + '" ';
    }
    str += '> </embed>';
  }

  document.write(str);
}

function AC_FL_RunContent(){
  var ret = 
    AC_GetArgs
    (  arguments, ".swf", "movie", "clsid:d27cdb6e-ae6d-11cf-96b8-444553540000"
     , "application/x-shockwave-flash"
    );
  AC_Generateobj(ret.objAttrs, ret.params, ret.embedAttrs);
}

function AC_SW_RunContent(){
  var ret = 
    AC_GetArgs
    (  arguments, ".dcr", "src", "clsid:166B1BCA-3F9C-11CF-8075-444553540000"
     , null
    );
  AC_Generateobj(ret.objAttrs, ret.params, ret.embedAttrs);
}

function AC_GetArgs(args, ext, srcParamName, classid, mimeType){
  var ret = new Object();
  ret.embedAttrs = new Object();
  ret.params = new Object();
  ret.objAttrs = new Object();
  for (var i=0; i < args.length; i=i+2){
    var currArg = args[i].toLowerCase();    

    switch (currArg){	
      case "classid":
        break;
      case "pluginspage":
        ret.embedAttrs[args[i]] = args[i+1];
        break;
      case "src":
      case "movie":	
        args[i+1] = AC_AddExtension(args[i+1], ext);
        ret.embedAttrs["src"] = args[i+1];
        ret.params[srcParamName] = args[i+1];
        break;
      case "onafterupdate":
      case "onbeforeupdate":
      case "onblur":
      case "oncellchange":
      case "onclick":
      case "ondblClick":
      case "ondrag":
      case "ondragend":
      case "ondragenter":
      case "ondragleave":
      case "ondragover":
      case "ondrop":
      case "onfinish":
      case "onfocus":
      case "onhelp":
      case "onmousedown":
      case "onmouseup":
      case "onmouseover":
      case "onmousemove":
      case "onmouseout":
      case "onkeypress":
      case "onkeydown":
      case "onkeyup":
      case "onload":
      case "onlosecapture":
      case "onpropertychange":
      case "onreadystatechange":
      case "onrowsdelete":
      case "onrowenter":
      case "onrowexit":
      case "onrowsinserted":
      case "onstart":
      case "onscroll":
      case "onbeforeeditfocus":
      case "onactivate":
      case "onbeforedeactivate":
      case "ondeactivate":
      case "type":
      case "codebase":
      case "id":
        ret.objAttrs[args[i]] = args[i+1];
        break;
      case "width":
      case "height":
      case "align":
      case "vspace": 
      case "hspace":
      case "class":
      case "title":
      case "accesskey":
      case "name":
      case "tabindex":
        ret.embedAttrs[args[i]] = ret.objAttrs[args[i]] = args[i+1];
        break;
      default:
        ret.embedAttrs[args[i]] = ret.params[args[i]] = args[i+1];
    }
  }
  ret.objAttrs["classid"] = classid;
  if (mimeType) ret.embedAttrs["type"] = mimeType;
  return ret;
}

  function doSelectSubject()
  {
      if( document.courses.subject.options[document.courses.subject.selectedIndex].text != "All" ) 
	  window.location = "teacher_new.php?subject=" + document.courses.subject.options[document.courses.subject.selectedIndex].text;
      else
	  window.location = "teacher_new.php";
  }
  
  function clearFileInput(tagId) 
  { 
      document.getElementById(tagId).innerHTML = 
	  document.getElementById(tagId).innerHTML; 
  } 

 function checkPassword(tagId)
  {
      if( document.insert_form.password.value 
	  != document.insert_form.cpassword.value )
     	  document.getElementById(tagId).innerHTML = "Does not match";
      else if( document.insert_form.password.value != "" )
     	  document.getElementById(tagId).innerHTML = "Matches";
      else
	  document.getElementById(tagId).innerHTML = "";
  }

  function checkValidEmail(tagId)
  {
      if( document.insert_form.email.value.indexOf(".") > 2
	  && document.insert_form.email.value.indexOf("@") > 0 
	  || document.insert_form.email.value == "")
	  document.getElementById(tagId).innerHTML = "";
      else
	  document.getElementById(tagId).innerHTML = "Invalid Email";
  }

  function countNumChars(tagId)
  {
      var mytext = document.getElementById(tagId).value;
      var count = mytext.length;
      document.getElementById("current_num_chars").innerHTML = 
	  "Max: 500 characters<br />Current: " + count + " characters";
  }

  function copyFromCodeToBox()
  {
      var code = document.getElementById("the_code").innerHTML;
     
      document.code_form.code.value = code;
  }

  var xmlHttp=null;

  function startCodeGetter()
  {
      setInterval("getCode()", 5000);
  }

  function getCode()
  {
      try
      {
	  xmlHttp=new XMLHttpRequest();
      }
      catch(e)
      {
	  try
	  {
	      xmlHttp= new ActiveXObject("Microsoft.XMLHTTP");
	  }
	  catch(e)
	  {
	      alert ("Your browser does not support XMLHTTP!");
	      return;
	  }
      }
      var url = "code_getter.php";
      xmlHttp.open("GET",url,false);
      xmlHttp.send(null);

      var code_key = xmlHttp.responseText + "";

      code_key = code_key.substring(code_key.indexOf("<result>")+8, code_key.indexOf("</result>"));
      var code = code_key.substring(0, 10);
      var key = code_key.substring(10);
      
      
      document.getElementById("the_code").innerHTML=code;
      document.code_form["the_key"].value=key;
  }

  function startTimeUpdater()
  {
      setInterval("updateTime()", 61000);
  }

function updateTime()
  {
      try
      {
	  xmlHttp=new XMLHttpRequest();
      }
      catch(e)
      {
	  try
	  {
	      xmlHttp= new ActiveXObject("Microsoft.XMLHTTP");
	  }
	  catch(e)
	  {
	      alert ("Your browser does not support XMLHTTP!");
	      return;
	  }
      }
      var url = "time_getter.php";
      xmlHttp.open("GET",url,false);
      xmlHttp.send(null);
      

      var mins = xmlHttp.responseText + "";

      mins = mins.substring(mins.indexOf("<result>")+8, 
			    mins.indexOf("</result>"));
      document.getElementById("minutes").innerHTML = mins;
  }

  function clearMessageOnFocus()
  {
      if(document.select_tutor_form.message.value == "Enter your message here.")
	  document.select_tutor_form.message.value = ""; 
  }
function clearReplyOnFocus()
  {
      if(document.reply_form.message.value == "Enter your message here.")
	  document.reply_form.message.value = ""; 
  }

  function MM_openBrWindow(theURL,winName,features) 
  { //v2.0
      
      window.open(theURL,winName,features);
      
  }
  
  function deleteAvailability(day,number)
  {
      var cur_time = day+"_time_"+number;
      var prev_time = day+"_time_"+(number-1);
      var cur_start = day+"_start_"+number;
      var prev_start = day+"_start_"+(number-1);
      var cur_end = day+"_end_"+number;
      var prev_end = day+"_end_"+(number-1);
      var cur_add = day+"_add_"+number;
      var prev_add = day+"_add_"+(number-1);
      var cur_del = day+"_delete_"+number;
      var prev_del = day+"_delete_"+(number-1);
				    
      document.getElementById(prev_time).value = "none";
      document.getElementById(prev_start).style.visibility = "hidden";
      document.getElementById(prev_end).style.visibility = "hidden";
      document.getElementById(cur_del).style.visibility = "hidden";
      if( number < 3 )
	  document.getElementById(cur_add).style.visibility = "hidden";
      if( number > 1 )
	  document.getElementById(prev_del).style.visibility = "visible";
      document.getElementById(prev_add).style.visibility = "visible";
  }

  function addAvailability(day,number)
  {
      var cur_time = day+"_time_"+number;
      var next_time = day+"_time_"+(number+1);
      var cur_start = day+"_start_"+number;
      var next_start = day+"_start_"+(number+1);
      var cur_end = day+"_end_"+number;
      var next_end = day+"_end_"+(number+1);
      var cur_add = day+"_add_"+number;
      var next_add = day+"_add_"+(number+1);
      var cur_del = day+"_delete_"+number;
      var next_del = day+"_delete_"+(number+1);
				    
     
      document.getElementById(cur_start).style.visibility = "visible";
      document.getElementById(cur_end).style.visibility = "visible";
      if(number > 0)
	  document.getElementById(cur_del).style.visibility = "hidden";
      if( number < 2 )
	  document.getElementById(next_add).style.visibility = "visible";
      document.getElementById(next_del).style.visibility = "visible";
      document.getElementById(cur_add).style.visibility = "hidden";
  }

  function submitTutorUpdateForm()
  {
      var mstarts = ["Monday_start_0", "Monday_start_1", "Monday_start_2"];
      var tstarts = ["Tuesday_start_0", "Tuesday_start_1", "Tuesday_start_2"];
      var wstarts = ["Wednesday_start_0", "Wednesday_start_1", "Wednesday_start_2"];
      var hstarts = ["Thursday_start_0", "Thursday_start_1", "Thursday_start_2"];
      var fstarts = ["Friday_start_0", "Friday_start_1", "Friday_start_2"];
      var sstarts = ["Saturday_start_0", "Saturday_start_1", "Saturday_start_2"];
      var ustarts = ["Sunday_start_0", "Sunday_start_1", "Sunday_start_2"];
      var all_starts = [mstarts, tstarts, wstarts, hstarts, 
	  fstarts, sstarts, ustarts];


      var mends = ["Monday_end_0", "Monday_end_1", "Monday_end_2"];
      var tends = ["Tuesday_end_0", "Tuesday_end_1", "Tuesday_end_2"];
      var wends = ["Wednesday_end_0", "Wednesday_end_1", "Wednesday_end_2"];
      var hends = ["Thursday_end_0", "Thursday_end_1", "Thursday_end_2"];
      var fends = ["Friday_end_0", "Friday_end_1", "Friday_end_2"];
      var sends = ["Saturday_end_0", "Saturday_end_1", "Saturday_end_2"];
      var uends = ["Sunday_end_0", "Sunday_end_1", "Sunday_end_2"];
      var all_ends = [mends, tends, wends, hends, 
	  fends, sends, uends];

      var mtimes = ["Monday_time_0", "Monday_time_1", "Monday_time_2"];
      var ttimes = ["Tuesday_time_0", "Tuesday_time_1", "Tuesday_time_2"];
      var wtimes = ["Wednesday_time_0", "Wednesday_time_1", "Wednesday_time_2"];
      var htimes = ["Thursday_time_0", "Thursday_time_1", "Thursday_time_2"];
      var ftimes = ["Friday_time_0", "Friday_time_1", "Friday_time_2"];
      var stimes = ["Saturday_time_0", "Saturday_time_1", "Saturday_time_2"];
      var utimes = ["Sunday_time_0", "Sunday_time_1", "Sunday_time_2"];
      var all_times = [mtimes, ttimes, wtimes, htimes, 
	  ftimes, stimes, utimes];

      for(var i = 0; i < all_starts.length; i++)
      {
	  for(var j = 0; j < all_starts[i].length; j++)
	  {
	      if(document.getElementById(all_starts[i][j]).style.visibility 
		 == "visible")
	      {
		  document.getElementById(all_times[i][j]).value 
		      = document.getElementById(all_starts[i][j]).options[document.getElementById(all_starts[i][j]).selectedIndex].value 
		      + " - "
		      + document.getElementById(all_ends[i][j]).options[document.getElementById(all_ends[i][j]).selectedIndex].value;
	      }
	  }
      }

      return true;
  }