var isMinNS4=(navigator.appName.indexOf("Netscape")>=0&&parseFloat(navigator.appVersion)>=4) ? 1 : 0;
var isMinIE4=(document.all) ? 1 : 0;
var isMinIE5=(isMinIE4&&navigator.appVersion.indexOf("5.")>=0) ? 1 : 0;


function hideLayer(layer){

if(isMinNS4)
layer.visibility="hide";
if(isMinIE4)
layer.style.visibility="hidden";
}

function showLayer(layer){

if(isMinNS4)
layer.visibility="show";
if(isMinIE4)
layer.style.visibility="visible";
}

function inheritLayer(layer){

if(isMinNS4)
layer.visibility="inherit";
if(isMinIE4)
layer.style.visibility="inherit";
}

function getVisibility(layer){

if(isMinNS4){
if(layer.visibility=="show")
return "visible";
if(layer.visibility=="hide")
return "hidden";
return layer.visibility;
}
if(isMinIE4)
return layer.style.visibility;
return "";
}


function moveLayerTo(layer,x,y){

if(isMinNS4)
layer.moveTo(x,y);
if(isMinIE4){
layer.style.left=x;
layer.style.top =y;
}
}

function moveLayerBy(layer,dx,dy){

if(isMinNS4)
layer.moveBy(dx,dy);
if(isMinIE4){
layer.style.pixelLeft += dx;
layer.style.pixelTop  += dy;
}
}

function getLeft(layer){

if(isMinNS4)
return layer.left;
if(isMinIE4)
return layer.style.pixelLeft;
return -1;
}

function getTop(layer){

if(isMinNS4)return layer.top;
if(isMinIE4)return layer.style.pixelTop;
return -1;
}

function getRight(layer){

if(isMinNS4)return layer.left+getWidth(layer);
if(isMinIE4)return layer.style.pixelLeft+getWidth(layer);
return -1;
}

function getBottom(layer){

if(isMinNS4)return layer.top+getHeight(layer);
if(isMinIE4)return layer.style.pixelTop+getHeight(layer);
return -1;
}

function getPageLeft(layer){

var x;

if(isMinNS4)return layer.pageX;
if(isMinIE4){
x=0;
while (layer.offsetParent!=null){
x += layer.offsetLeft;
layer=layer.offsetParent;
}
x += layer.offsetLeft;
return x;
}
return -1;
}

function getPageTop(layer){

var y;

if(isMinNS4)
return layer.pageY;
if(isMinIE4){
y=0;
while (layer.offsetParent!=null){
y += layer.offsetTop;
layer=layer.offsetParent;
}
y += layer.offsetTop;
return y;
}
return -1;
}

function getWidth(layer){

if(isMinNS4){
if(layer.document.width)
return layer.document.width;
else
return layer.clip.right-layer.clip.left;
}
if(isMinIE4){
if(layer.style.pixelWidth)
return layer.style.pixelWidth;
else
return layer.clientWidth;
}
return -1;
}

function getHeight(layer){

if(isMinNS4){
if(layer.document.height)
return layer.document.height;
else
return layer.clip.bottom-layer.clip.top;
}
if(isMinIE4){
if(layer.style.pixelHeight)
return layer.style.pixelHeight;
else
return layer.clientHeight;
}
return -1;
}

function getzIndex(layer){

if(isMinNS4)
return layer.zIndex;
if(isMinIE4)
return layer.style.zIndex;

return -1;
}

function setzIndex(layer,z){

if(isMinNS4)
layer.zIndex=z;
if(isMinIE4)
layer.style.zIndex=z;
}


function clipLayer(layer,clipleft,cliptop,clipright,clipbottom){

if(isMinNS4){
layer.clip.left=clipleft;
layer.clip.top=cliptop;
layer.clip.right=clipright;
layer.clip.bottom=clipbottom;
}
if(isMinIE4)
layer.style.clip='rect('+cliptop+' '+ clipright+' '+clipbottom+' '+clipleft +')';
}

function getClipLeft(layer){

if(isMinNS4)
return layer.clip.left;
if(isMinIE4){
var str= layer.style.clip;
if(!str)
return 0;
var clip=getIEClipValues(layer.style.clip);
return(clip[3]);
}
return -1;
}

function getClipTop(layer){

if(isMinNS4)
return layer.clip.top;
if(isMinIE4){
var str= layer.style.clip;
if(!str)
return 0;
var clip=getIEClipValues(layer.style.clip);
return clip[0];
}
return -1;
}

function getClipRight(layer){

if(isMinNS4)
return layer.clip.right;
if(isMinIE4){
var str= layer.style.clip;
if(!str)
return layer.style.pixelWidth;
var clip=getIEClipValues(layer.style.clip);
return clip[1];
}
return -1;
}

function getClipBottom(layer){

if(isMinNS4)
return layer.clip.bottom;
if(isMinIE4){
var str= layer.style.clip;
if(!str)
return layer.style.pixelHeight;
var clip=getIEClipValues(layer.style.clip);
return clip[2];
}
return -1;
}

function getClipWidth(layer){

if(isMinNS4)
return layer.clip.width;
if(isMinIE4){
var str=layer.style.clip;
if(!str)
return layer.style.pixelWidth;
var clip=getIEClipValues(layer.style.clip);
return clip[1]-clip[3];
}
return -1;
}

function getClipHeight(layer){

if(isMinNS4)
return layer.clip.height;
if(isMinIE4){
var str= layer.style.clip;
if(!str)
return layer.style.pixelHeight;
var clip=getIEClipValues(layer.style.clip);
return clip[2]-clip[0];
}
return -1;
}

function getIEClipValues(str){

var clip=new Array();
var i;

// Parse out the clipping values for IE layers.

i=str.indexOf("(");
clip[0]=parseInt(str.substring(i+1,str.length),10);
i=str.indexOf(" ",i+1);
clip[1]=parseInt(str.substring(i+1,str.length),10);
i=str.indexOf(" ",i+1);
clip[2]=parseInt(str.substring(i+1,str.length),10);
i=str.indexOf(" ",i+1);
clip[3]=parseInt(str.substring(i+1,str.length),10);
return clip;
}


function scrollLayerTo(layer,x,y,bound){

var dx=getClipLeft(layer)-x;
var dy=getClipTop(layer)-y;

scrollLayerBy(layer,-dx,-dy,bound);
}

function scrollLayerBy(layer,dx,dy,bound){

var cl=getClipLeft(layer);
var ct=getClipTop(layer);
var cr=getClipRight(layer);
var cb=getClipBottom(layer);

if(bound){
if(cl+dx < 0)
dx=-cl;
else if(cr+dx > getWidth(layer))
dx=getWidth(layer)-cr;
if(ct+dy < 0)
dy=-ct;
else if(cb+dy > getHeight(layer))
dy=getHeight(layer)-cb;
}
clipLayer(layer,cl+dx,ct+dy,cr+dx,cb+dy);
moveLayerBy(layer,-dx,-dy);
}


function setBgColor(layer,color){

if(isMinNS4)
layer.bgColor=color;
if(isMinIE4)
layer.style.backgroundColor=color;
}

function setBgImage(layer,src){

if(isMinNS4)
layer.background.src=src;
if(isMinIE4)
layer.style.backgroundImage="url("+src+")";
}


function getLayer(name){

if(isMinNS4)
return findLayer(name,document);
if(isMinIE4)
return eval('document.all.'+name);
return null;
}

function findLayer(name,doc){

var i,layer;

for (i=0; i < doc.layers.length; i++){
layer=doc.layers[i];
if(layer.name==name)
return layer;
if(layer.document.layers.length > 0)
if((layer=findLayer(name,layer.document))!=null)
return layer;
}
return null;
}


function getImage(name){

if(isMinNS4){
return findImage(name,document);
}
if(isMinIE4)
return eval('document.all.'+name);
return null;
}

function findImage(name,doc){

var i,img;

for (i=0; i < doc.images.length; i++)
if(doc.images[i].name==name)
return doc.images[i];
for (i=0; i < doc.layers.length; i++)
if((img=findImage(name,doc.layers[i].document))!=null){
img.container=doc.layers[i];
return img;
}
return null;
}

function getImagePageLeft(img){

var x,obj;

if(isMinNS4){
if(img.container!=null)
return img.container.pageX+img.x;
else
return img.x;
}
if(isMinIE4){
x=0;
obj=img;
while (obj.offsetParent!=null){
x += obj.offsetLeft;
obj=obj.offsetParent;
}
x += obj.offsetLeft;
return x;
}
return -1;
}

function getImagePageTop(img){

var y,obj;

if(isMinNS4){
if(img.container!=null)
return img.container.pageY+img.y;
else
return img.y;
}
if(isMinIE4){
y=0;
obj=img;
while (obj.offsetParent!=null){
y += obj.offsetTop;
obj=obj.offsetParent;
}
y += obj.offsetTop;
return y;
}
return -1;
}


function getWindowWidth(){

if(isMinNS4)
return window.innerWidth;
if(isMinIE4)
return document.body.clientWidth;
return -1;
}

function getWindowHeight(){

if(isMinNS4)
return window.innerHeight;
if(isMinIE4)
return document.body.clientHeight;
return -1;
}

function getPageWidth(){

if(isMinNS4)
return document.width;
if(isMinIE4)
return document.body.scrollWidth;
return -1;
}

function getPageHeight(){

if(isMinNS4)
return document.height;
if(isMinIE4)
return document.body.scrollHeight;
return -1;
}

function getPageScrollX(){

if(isMinNS4)
return window.pageXOffset;
if(isMinIE4)
return document.body.scrollLeft;
return -1;
}

function getPageScrollY(){

if(isMinNS4)
return window.pageYOffset;
if(isMinIE4)
return document.body.scrollTop;
return -1;
}