var field="";

//*******************************************************************************
//***** Fonction de r�up�ation de la position d'un ��ent d'une page html ****
//*******************************************************************************
function getAnchorPosition(anchorname) {
	// This function will return an Object with x and y properties
	var useWindow=false;
	var coordinates=new Object();
	var x=0,y=0;
	// Browser capability sniffing
	var use_gebi=false, use_css=false, use_layers=false;
	if (document.getElementById) { use_gebi=true; }
	else if (document.all) { use_css=true; }
	else if (document.layers) { use_layers=true; }
	// Logic to find position
 	if (use_gebi && document.all) {
		x=AnchorPosition_getPageOffsetLeft(document.all[anchorname]);
		y=AnchorPosition_getPageOffsetTop(document.all[anchorname]);
		}
	else if (use_gebi) {
		var o=document.getElementById(anchorname);
		x=AnchorPosition_getPageOffsetLeft(o);
		y=AnchorPosition_getPageOffsetTop(o);
		}
 	else if (use_css) {
		x=AnchorPosition_getPageOffsetLeft(document.all[anchorname]);
		y=AnchorPosition_getPageOffsetTop(document.all[anchorname]);
		}
	else if (use_layers) {
		var found=0;
		for (var i=0; i<document.anchors.length; i++) {
			if (document.anchors[i].name==anchorname) { found=1; break; }
			}
		if (found==0) {
			coordinates.x=0; coordinates.y=0; return coordinates;
			}
		x=document.anchors[i].x;
		y=document.anchors[i].y;
		}
	else {
		coordinates.x=0; coordinates.y=0; return coordinates;
		}
	coordinates.x=x;
	coordinates.y=y;
	return coordinates;
	}
// Functions for IE to get position of an object
function AnchorPosition_getPageOffsetLeft (el) {
	var ol=el.offsetLeft;
	while ((el=el.offsetParent) != null) { ol += el.offsetLeft; }
	return ol;
	}
function AnchorPosition_getWindowOffsetLeft (el) {
	return AnchorPosition_getPageOffsetLeft(el)-document.body.scrollLeft;
	}	
function AnchorPosition_getPageOffsetTop (el) {
	var ot=el.offsetTop;
	while((el=el.offsetParent) != null) { ot += el.offsetTop; }
	return ot;
	}
function AnchorPosition_getWindowOffsetTop (el) {
	return AnchorPosition_getPageOffsetTop(el)-document.body.scrollTop;
	}
//******************************************************
//**** Gestion de l'apparition disparition du layer ****
//******************************************************
function ShowDiv(divid) 
{ 
	c=getAnchorPosition(field);
    document.getElementById(divid).style.position="absolute";
    document.getElementById(divid).style.top=c.y+20+"px";
    document.getElementById(divid).style.left=c.x+"px";
	document.getElementById(divid).style.visibility="visible";
}

function HideDiv(divid) 
{
document.getElementById(divid).style.visibility="hidden";
}
var req;

//**********************************************
//***** Initialisation de l'objet request ******
//**********************************************
function Initialize()
{
    try{
		req=new ActiveXObject("Msxml2.XMLHTTP");
	}
    catch(e){
		try{
			req=new ActiveXObject("Microsoft.XMLHTTP");
        }
        catch(oc){
            req=null;
        }
    }
    if(!req&&typeof XMLHttpRequest!="undefined"){
        req= new XMLHttpRequest();
    }
}

//*****************************************************
//***** Gestion de la requete Affichage de l'arbre ****
//*****************************************************


function ReqHttpTree(ray_id,ray_hide_status){
		
	Initialize();	
	if (req!=null){
		req.onreadystatechange = ReqHttpfnTree;
		
		// parametre true pour definir su requete est (a)synchrone
		// asynchrone rafraichi automatiquement meme sans avoir fini premiere traitement
		// true = asynchone
		if (ray_hide_status == -1)
		req.open("GET","ajax/req_tree.php?ray_id="+ray_id,true);
		else		
		req.open("GET","ajax/req_tree.php?ray_id="+ray_id+"&ray_hide_status="+ray_hide_status,true);
		req.send(null);
	}
}


function ReqHttpfnTree()
{	
	
	// ces fonctions se basent sur des indices pour savoir l etat du traitement 
	// voir sur web pour plus infos
    if (req.readyState==4) 
        {
        // only if "OK"
            if (req.status == 200)
            {
			if(req.responseText=="")
                    document.getElementById("tree_here").style.visibility="hidden";
                else
                {
                    document.getElementById("tree_here").style.visibility="visible";
                    document.getElementById("tree_here").innerHTML =req.responseText;
                }
            }
            else 
            {
                alert("Connection Aborted");
            }
        }
}