var labelWidth = 312;
var labelDropDown = 20;
var arrowWidth = 50;
var arrowHeight = 75;
var arrowMaxOffset = 95;
var arrowMarginOffset = 60;

window.onresize= CenterPosition;

function GetDocWidth(){
 if (document.documentElement && document.documentElement.scrollTop){
	var docWidth = document.documentElement.clientWidth;
  }else if (document.body){
	var docWidth = document.body.clientWidth;
  } else {
    var docWidth = 800;
  }  
  return docWidth;
}
function GetDocHeight(){
 if (document.documentElement && document.documentElement.scrollTop){
	var docHeight = document.documentElement.clientHeight;
  }else if (document.body){
	var docHeight = document.body.clientHeight;
  } else {  
    var docHeight = 600;
  }  
  return docHeight;
}

function CenterPosition(){
  var docWidth = GetDocWidth();
  var docHeight = GetDocHeight(); 
  //------- for the image --------
  cPicWidth = document.getElementById("bigpic").style.width;
  nPicWidth = parseInt(cPicWidth);
  cPicHeight = document.getElementById("bigpic").style.height;
  nPicHeight = parseInt(cPicHeight);  
  var picLeft = (docWidth - nPicWidth)/2;
  var picTop = (docHeight - nPicHeight - labelDropDown)/2; 
  if(picLeft <= 0){
    picLeft= 0;
  }	
  if(picTop <= 0){
    picTop= 0;
  }	  
  document.getElementById("bigpic").style.left = picLeft;
  document.getElementById("bigpic").style.top = picTop;
  document.getElementById("fuzzy").style.left = picLeft;
  document.getElementById("fuzzy").style.top = picTop;
  
  //--- the info label 
  var labelLeft = (docWidth - labelWidth)/2;
  if(labelLeft <= 0){
    labelLeft = 0;
  }	    
  document.getElementById("infolabel").style.left = labelLeft;
  var labelTop = picTop + nPicHeight + labelDropDown;
  document.getElementById("infolabel").style.top = picTop + nPicHeight + labelDropDown;  
  
  // -- arrows vertical 
  var arrowTop = picTop + (nPicHeight/2) - (arrowHeight/3);
  document.getElementById("leftArrow").style.top = arrowTop;
  document.getElementById("rightArrow").style.top = arrowTop;
  
  // -- arrows horizontal   
  var leftArrowLeft = arrowMarginOffset;
  if(leftArrowLeft <=0){
    leftArrowLeft = 0;
  }	
 // if(picLeft - (leftArrowLeft + arrowWidth) >= arrowMaxOffset){
 //   leftArrowLeft = picLeft - arrowMaxOffset - arrowWidth;
 // }
  if(picLeft - leftArrowLeft <= arrowWidth){
    leftArrowLeft = picLeft - arrowWidth;
  }
  document.getElementById("leftArrow").style.left = leftArrowLeft;  
  var currentArrowOffset = picLeft - (leftArrowLeft + arrowWidth);
  x = currentArrowOffset + ""
  document.getElementById("rightArrow").style.left = picLeft + nPicWidth + currentArrowOffset;  
  
  //---- home arrow
  document.getElementById("homeArrow").style.top = picTop;
  document.getElementById("homeArrow").style.left = leftArrowLeft;
}

function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}