/*
Highlight Table Cells Script- 
*/


// 07.05.01 new code to detect Netscape 6
var browserName = navigator.appName;
var browserVersion = navigator.appVersion;
var browserVersionNum = parseFloat(browserVersion)
var found_str = browserName.indexOf("Netscape");



function changeto(highlightcolor)
{
  var row_index;
  source=event.srcElement;
  row_index = source.parentElement.rowIndex;
  if (source.tagName=="TR"||source.tagName=="TABLE")
  return
  while(source.tagName != "TD")
  {
    source=source.parentElement;
  }
  
  // get out cell id, check if we have ignore in id (needed to ignore high light of first row)
  var source_id = "" + source.id;
  var found_ignore = false;
  if (source_id.indexOf("ignore") > -1)
  {
    found_ignore = true;
  }
  // done check for ignore
  
  if (source.style.backgroundColor!=highlightcolor && !found_ignore)
  {
    source.style.backgroundColor=highlightcolor  
  }
}



function changeback(originalcolor)
{
  var row_index = source.parentElement.rowIndex;
  
  // check if our first table row should be un-high-lighted even if its the first row (i.e. index=0)
  if (source.id == "unhighlight")
  {
    row_index = -1; //reset make sure our row_index is not 0 so the following code will execute
  }
  
  if (event.fromElement.contains(event.toElement)||source.contains(event.toElement)||row_index==0)
  {
    return;
  }
  
  if (event.toElement != source)
  {
    source.style.backgroundColor = originalcolor;
  }
}


var xpos;
var ypos;
if (document.layers) document.captureEvents(Event.MOUSEMOVE);
document.onmousemove=mtrack;

function mtrack(e)
{
   
   if (document.layers)
   {
     xpos = e.pageX;
     ypos = e.pageX;
   }
   else if ((found_str > -1) && (browserVersionNum == 5))
   {
     xpos = e.pageX;
     ypos = e.pageX;
   } 
   else
   {
     xpos = event.x;
     ypos = event.y;
   }
    
}

var toggleHash = new Array();
var layerList = new Array();

addLayer("home", 205,73);
addLayer("about", 294,73);
addLayer("media", 383,73);
addLayer("Environment", 472,73);
addLayer("Emergencies", 561,73);
addLayer("air", 205,89);
addLayer("marine", 294,89);
addLayer("rail", 383,89);
addLayer("road", 472,89);
addLayer("allmodes", 561,89);
addLayer("recentnews", 142,268);
addLayer("contacts", 142,325);



function addLayer(name, xPos, yPos)
{
	layerList[layerList.length] = name;
	
	toggleHash[name] = new Array();
	toggleHash[name]["name"] = name + "Layer";
	toggleHash[name]["toggle"] = false;
	toggleHash[name]["yPos"] = yPos;
	toggleHash[name]["xPos"] = xPos;
}

function Toggle(layerName)
{
  
  if (!toggleHash[layerName]["toggle"])
  {
    toggleHash[layerName]["toggle"] = true;
    show(layerName);

    // Don't forget to hide everything else
    for (i = 0; i < layerList.length; i++)
    {
       // But don't hide the one we just displayed.
       if (layerList[i] != layerName)
       {
          if (toggleHash[layerList[i]]["toggle"])
          {
             toggleHash[layerList[i]]["toggle"] = false;
             hide(layerList[i]);
          }
       }
    }
  }
  else
  {
    toggleHash[layerName]["toggle"] = false;
    hide(layerName);
  }
}


function ToggleOff()
{
	for(i = 0; i < layerList.length; i++)
	{  
		if (toggleHash[layerList[i]]["toggle"])
		{
			toggleHash[layerList[i]]["toggle"] = false;
   		hide(layerList[i]);
   	}
   }
}




function show(object)
{
  
  // check for netscape 6
  if ((found_str > -1) && (browserVersionNum == 5))
  {
    var layer_name = "" +  toggleHash[object]["name"];
    var element = document.getElementById(layer_name);
    element.style.visibility = "visible";
    element.style.left = toggleHash[object]["xPos"];
    element.style.top = toggleHash[object]["yPos"];
  }  
  else if (document.layers && document.layers[toggleHash[object]["name"]])
  {
    document.layers[toggleHash[object]["name"]].visibility = 'visible';
    document.layers[toggleHash[object]["name"]].left = toggleHash[object]["xPos"];
    document.layers[toggleHash[object]["name"]].top = toggleHash[object]["yPos"];
    
  }
  else if (document.all)
  {
    document.all[toggleHash[object]["name"]].style.visibility = 'visible';
    document.all[toggleHash[object]["name"]].style.left = toggleHash[object]["xPos"];
    document.all[toggleHash[object]["name"]].style.top = toggleHash[object]["yPos"];
    document.all[toggleHash[object]["name"]].style.zIndex = 100;
  }
}

function hide(object)
{
  
  // check for netscape 6
  if ((found_str > -1) && (browserVersionNum == 5))
  {
    var layer_name = "" + toggleHash[object]["name"];
    var element = document.getElementById(layer_name);
    element.style.visibility = "hidden";
  }
  else if (document.layers && document.layers[toggleHash[object]["name"]])
  {
    document.layers[toggleHash[object]["name"]].visibility = 'hidden';
  }
  else if (document.all)
  {
    document.all[toggleHash[object]["name"]].style.visibility = 'hidden';
  }
}
var brwsVer=parseInt(navigator.appVersion);var timer;var object='name';

function searchlink()
{
var a = document.frmmenu.elements['searchaction'];

if (a != null)
	{
	if (document.frmmenu.elements['searchaction'].value == 0)
		{
		window.document.links[4].href="http://search.tc.gc.ca/en/search.asp";
		}
	else
		{
		window.document.links[4].href=document.frmmenu.elements['searchaction'].value;
	   	}
	}
else
{
window.document.links[4].href="http://search.tc.gc.ca/en/search.asp";
}
	
	
}