////////////////detect browser/////////////////////////////////////////

var ie, ns, ver, br;

if (navigator.appName == "Netscape") {
   br="ns";ns =1;
} else {
   br="ie";ie=1;
}
ver = navigator.appVersion.substring(0,1);


////////////////Generic image swapping functions///////////////////////

document.lastImgs = new Array;

function PreloadImages() { 
  images = new Array;
  for (x=0; x<PreloadImages.arguments.length; x++) {
  	images[x]=new Image;
  	images[x].src=PreloadImages.arguments[x];
  	}
}

function SwapImage () {
  if (document.images) {
   if (document.lastImgs.length) {
      RestoreImage();
   }
   a = SwapImage.arguments;
   inum = 0;
   for (x = 0; x < a.length; x+=2) {
      oldimg = a[x];
      newimg = a[x+1];
      document.images[oldimg].oldsrc = document.images[oldimg].src;
      document.images[oldimg].src=newimg;
      
      document.lastImgs[inum] = oldimg;
      inum++;
   
    }
  }
}

function RestoreImage () {
  if (document.images) {
   for (x = 0; x < document.lastImgs.length; x++) {
      img = document.lastImgs[x];
      document.images[img].src=document.images[img].oldsrc;
   }
   document.lastImgs = new Array;
  }
}

var restoreImgName = ""; 
var restoreImgSrc = "";

function SwapLayers (hideLayer,showLayer) {
  if(document.layers) {
   restoreImgName=document.layers[hideLayer].document.images[0];
   restoreImgSrc=restoreImgName.src;
   document.layers[hideLayer].document.images[0].src=showLayer;
  }
  else {
  restoreImgName=document.images[hideLayer];
  restoreImgSrc=restoreImgName.src;
  document.images[hideLayer].src=showLayer;
  }
}

function RestoreLayer () {
  restoreImgName.src=restoreImgSrc;
}

function newWindow(url, height, width, nameW, scrollbars, resize, buttons) {
    if (nameW==""){nameW='popup';}
    if (scrollbars != 1) {scrollbars = "no";} else {scrollbars = "yes";}
    if (resize != 1) {resize = "no";} else {resize = "yes";}
    if (buttons != 1) {buttons = "no";} else {buttons = "yes";}
 if (navigator.appVersion.indexOf('4') != -1) {
 // Vars for centering the new window on Version 4 Browsers
 xTop = screen.width/2 - (width/2);
 yTop = screen.height/2 - (height/2);
 p = window.open(url, nameW, 'height='+height+',width='+width+',scrollbars='+scrollbars+',resizable='+resize+',menubar='+buttons+',toolbar='+buttons+',status=0,location='+buttons+',directories=0,left=' + xTop + ',top=' + yTop + '');
 } else {
 p = window.open(url, nameW, 'height='+height+',width='+width+',scrollbars='+scrollbars+',resizable='+resize+',menubar='+buttons+',toolbar='+buttons+',status=0,location='+buttons+',directories=0,left=150,top=200');
 }
 p.focus();
}

function submitenter(myfield,e,action)
{
var keycode;
if (window.event) keycode = window.event.keyCode;
else if (e) keycode = e.which;
else return true;

if (keycode == 13)
   {
   eval(action);
   return false;
   }
else
   return true;
}

//////Return appropriate layer object for broswer, or 0 if layer doesn't exist
function GetDiv (lyr, nostyle) {
   if (br == "ns") {
      if (ver <= 4) {
         if (document.layers['lyr']) {
          lyr=eval("document.layers."+lyr);
         }
      } else {
         if (document.getElementById(lyr)) {
          lyr = document.getElementById(lyr);
          if (!nostyle) {
            lyr = lyr.style;
          }
         } else {
          lyr = 0;
         }
      }
   } else {
      if (eval("document.all."+lyr)) {
         if (!nostyle) {
           lyr=eval("document.all."+lyr+".style");
         } else {
           lyr=eval("document.all."+lyr);
         }
      }
   }
   return lyr;
}

function changeStyle (objname, stylename, setting) {

   if (lyr = GetDiv (objname)) {
   
      lyr[stylename] = setting;
      
   }
   
}

function point (x, y) {
   this.x = x;
   this.y = y;
}

var timerID = 0;
var ring = "";
function moveRing (bubble) {
   curBubble = bubble;
   ring = GetDiv("ring");
   ring.visibility = 'visible';
   goalX = bubbles[bubble].x;   
   goalY = bubbles[bubble].y;   
   timerID = setTimeout("moveRingStep()",25);
}

function moveRingStep () {
   curX = parseInt(ring.left);
   curY = parseInt(ring.top);
   deltaX = (goalX - curX) / 2.5;
   deltaY = (goalY - curY) / 2.5;
   ring.left = curX + deltaX;
   ring.top = curY + deltaY;
   timerID = setTimeout("moveRingStep()",25);
   //alert (curX+" "+curY+" "+goalX+" "+goalY+" "+deltaX+" "+deltaY);
   //clearTimeout(timerID);
   if (Math.abs(goalX - curX) < 3 && Math.abs(goalY - curY) < 3) {
      
      ring.left = bubbles[curBubble].x;
      ring.top = bubbles[curBubble].y;
      clearTimeout(timerID);
      timerID = 0;
   }
}

function clickBubble() {
   newWindow('closeup.php?section='+curSection+'&bubble='+curBubble,'625','625','luckybubble');
}