/*	==========================================================
	Filename		: core.js
	Author			: Copyright 2001-2003 La Mire(www.lamire.com)
	Created			: mercredi 8 octobre 2003 16:47:41
	Last Updated	: mercredi 8 octobre 2003 16:47:41
	Comments		: 
	
	DOM API - mainly from http://timmorgan.info/1k/
	biblioth?e de base.
	
	==========================================================*/

var d=document;
var ua = navigator.userAgent;
var ns4=(d.layers)?1:0;
var op = /opera [56789]|opera\/[56789]/i.test(ua); // opera version 5+
var ie = !op && /MSIE/.test(ua);
var dom=d.getElementById;
var ns6=(dom&&!ie)?1:0;
var mac=(ua.indexOf("Mac")!=-1);
var macie5 = ie && mac && /MSIE 5/i.test(ua); // IE mac 5
// no support for ns4 !
if (ns4) alert ("le support de Netscape 4 n'est pas assuré");
// 1K dom original
function gE(e){return d.getElementById(e)};
function cE(t){return d.createElement(t||'div')};
function aC(e,p){return (p||d.body).appendChild(e)};
function sE(e){e.style.visibility='visible'};
function hE(e){e.style.visibility='hidden'};
function sZ(e,z){e.style.zIndex=z};
function sX(e,x){e.style.left=px(x)};
function sY(e,y){e.style.top=px(y)};
function sW(e,w){e.style.width=px(w)};
function sH(e,h){e.style.height=px(h)};
function sC(e,t,r,b,l){e.style.clip='rect('+t+' '+r+' '+b+' '+l+')'};
function wH(e,h){e.innerHTML=h};
function sB(e,b){e.style.background=b};
function sign(x,y){return(x<y)?1:-1};
function px(n){return n+'px'};

// additions
function moveto(e,p){sX(e,p.x);sY(e,p.y)}
function gW(e){return(op)?e.style.pixelWidth:parseInt(e.style.width);}
function gH(e){return(op)?e.style.pixelHeight:parseInt(e.style.height);}
function gX(e){return(op)?e.style.pixelLeft:e.style.left;}
function gY(e){return(op)?e.style.pixelTop:e.style.top;}

function pt(x,y){this.x=x;this.y=y;}
function gPT(e){return new pt(gX(e),gY(e));}
// retourne la position absolue d'un objet dans la page (test? win : Mozilla 1.5, NS6.2, IE5.0 et Mac : IE5.1)
function eltPos(o){
	var x=0,y=0;
	if (macie5){  // macie5
		var lastOffset=0;
		while(o){
			if(o.leftMargin){x+=parseInt(o.leftMargin);y+=parseInt(o.topMargin);}
			if((o.offsetLeft != lastOffset) && o.offsetLeft){x+=parseInt(o.offsetLeft);y+=parseInt(o.offsetTop);}
			if(o.offsetLeft!=0) lastOffset = o.offsetLeft;
			o=o.parentElement;
		}
	}else{ // other os
		if(o.x){x=o.x;y=o.y}
		else{while(o.offsetParent){x+=o.offsetLeft;y+=o.offsetTop;o=o.offsetParent;}}
	}
	return new pt(x,y);
}
// retourne le rectangle contenant d'un objet
function eltRect(e) {
	var c=eltPos(e);return{left:c.x,top:c.y,bottom:c.y+e.offsetHeight,right:c.x+e.offsetWidth};
}
// retourne les dimensions int?eures de la fen?e du navigateur
function winSize() {
	var w=0,h=0;
  if(op){w=window.innerWidth;h=window.innerHeight;}
  else if(d.documentElement && d.documentElement.clientWidth){w=d.documentElement.clientWidth;h=document.documentElement.clientHeight;}
  else if(d.body && d.body.clientWidth){w=d.body.clientWidth;h=document.body.clientHeight;}
  else if(xDef(window.innerWidth,window.innerHeight,d.height)){
    w=window.innerWidth;h=window.innerHeight;
    if(d.height>window.innerHeight) w-=16;if(d.width>window.innerWidth) h-=16;
  }
  return {'w':w,'h':h};
}
function xDef() {
  for(var i=0;i<arguments.length;++i){if(typeof(arguments[i])=='undefined') return false;}
  return true;
}
// renvoie les valeurs de scroll top et left dans un objet point.
function wscroll(){
	var w,h;if(ie){h=d.body.scrollTop;w=d.body.scrollLeft;}else{h=window.pageYOffset;h=window.pageXOffset;}
	return new pt(w,h);
}
// events (DOM only)


function addEvent(obj, evType, fn, useCapture){
  if (obj.addEventListener){
    obj.addEventListener(evType, fn, useCapture);
    return true;
  } else if (obj.attachEvent){
    var r = obj.attachEvent("on"+evType, fn);
    return r;
  } else {
    alert("Handler could not be attached");
  }
}
/*
Note how I'm appending "on" to the front of evType, 
and discarding the useCapture boolean, 
which is only relevant to the EventListener interface.
 If the browser implements neither addEventListener nor attachEvent,
  the alert statement warns the developer of the problem.

To remove an event, we can easily build a removeEvent method
 that uses almost exactly the same code, 
 but utilizing removeEventListener and detachEvent.
*/
function removeEvent(obj, evType, fn, useCapture){
  if (obj.removeEventListener){
    obj.removeEventListener(evType, fn, useCapture);
    return true;
  } else if (obj.detachEvent){
    var r = obj.detachEvent("on"+evType, fn);
    return r;
  } else {
    alert("Handler could not be removed");
  }
} 



function addEvt(e,ev,f){if(ie)e.attachEvent("on"+ev,f);else e.addEventListener(ev,f,true);}
function remEvt(e,ev,f){if(ie)e.detachEvent("on"+ev,f);else e.removeEventListener(ev,f,true);}
function stopEvt(ev){
if(ie){window.event.cancelBubble=true;window.event.returnValue=false;}
else{ev.preventDefault();ev.stopPropagation();}}
function getElement(ev){return(ie)?window.event.srcElement:ev.currentTarget;}
function getTargetElement(ev){return(ie)?window.event.srcElement:ev.target;}
// ---------- END DOM API