/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Written by Terry Friesen,  tfriesen@mts.net  copyright 1999-2001
http://www.mts.net/~tfriesen/dhtml

This script may be used freely on non-commercial web pages
It is not to be sold or profit made from it without the consent of the author
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/

if(!document.getElementById){
document.getElementById=get_Element;
document.allLayers=new Array();
}
if(!document.getElementsByTagName||document.all){
document.getElementsByTagName=get_Tags;
}

function get_Tags(a1){
var ns4=this.layers;
var dl=this.allLayers;
if(ns4&&!dl.length){
var lay=ns4.length?ns4[0]:false;
for(var i=0;lay;i++){
dl[i]=dl[lay.id]=lay;
lay.style=new Object();
lay.style.par=lay;
set_nsStyle(lay.style);
lay=lay.above;
}
}
if(this.body){
if(this.all){dl=a1=="*"?this.all:this.all.tags(a1)}
else{dl=this.body.getElementsByTagName(a1)}
}
if(!dl.item){dl.item=get__Item}
if(!dl.namedItem){dl.namedItem=get__Item}
return dl;
}

function get_Element(a1){
if(this.layers){return this.allLayers[a1]||this.getElementsByTagName()[a1]}
return this.all[a1];
}

function ns_Height(a1,a2,a3){this.par.clip.height=parseInt(a3);return get_nsHeight(this.par)}

function ns_Width(a1,a2,a3){this.par.clip.width=parseInt(a3);return get_nsWidth(this.par)}

function ns_Left(a1,a2,a3){this.par.left=parseInt(a3);return a3}

function ns_Top(a1,a2,a3){this.par.top=parseInt(a3);return a3}

function ns_zIndex(a1,a2,a3){return this.par.zIndex=a3}

function ns_Visible(a1,a2,a3){this.par.visibility=a3;return a3}

function ns_Clip(a1,a2,a3){
var s=a3.split(" ");
if(s.length<4){s=a3.split(",")}
var c=this.par.clip;
var p=parseInt;
c.top=p(s[0].substr(5));
c.right=p(s[1]);
c.bottom=p(s[2]);
c.left=p(s[3]);
return get_nsClip(c);
}

function ns_bgColor(a1,a2,a3){
this.par.bgColor=a3.toLowerCase()=='transparent'?null:a3;
return a3;
}

function ns_bgImage(a1,a2,a3){
this.par.background.src=a3.substring(a3.indexOf("(")+1,a3.indexOf(")"))||null;
return a3;
}

function set_nsStyle(t){
var p=t.par;
t.height=get_nsHeight(p)+"px";
t.width=get_nsWidth(p)+"px";
t.left=p.left+"px";
t.top=p.top+"px";
t.zIndex=p.zIndex;
t.visibility=get_nsVisible(p.visibility);
t.clip=get_nsClip(p.clip);
t.backgroundColor="";
t.backgroundImage="";
t.watch("height",ns_Height);
t.watch("width",ns_Width);
t.watch("left",ns_Left);
t.watch("top",ns_Top);
t.watch("zIndex",ns_zIndex);
t.watch("visibility",ns_Visible);
t.watch("clip",ns_Clip);
t.watch("backgroundImage",ns_bgImage);
t.watch("backgroundColor",ns_bgColor);
}

function get_nsVisible(vis){
if(vis=='hide')return 'hidden';
if(vis=='show')return 'visible';
return 'inherit';
}

function get_nsClip(c){return "rect("+c.top+"px "+c.right+"px "+c.bottom+"px "+c.left+"px)"}
function get_nsHeight(p){return Math.max(p.clip.height,p.document.height)}
function get_nsWidth(p){return Math.max(p.clip.width,p.document.width)}

function Height(){return this.innerHeight||document.body.clientHeight}
function Width(){return this.innerWidth||document.body.clientWidth}
function get__Item(a1){return this[a1]}