function pop_win_v(ref) {
	var largeurEcran = (screen.width - 550) / 2;
	var hauteurEcran = (screen.height - 530) / 2;
	window.open(ref, 'mediaserver', 'height=530, width=550, top=' + hauteurEcran + ', left=' + largeurEcran + ', scrollbars=no, resizable');
}
	function pop_win_a(ref) {
	var largeurEcran = (screen.width - 400) / 2;
	var hauteurEcran = (screen.height - 212) / 2;
	window.open(ref, 'mediaserver', 'height=212, width=400, top=' + hauteurEcran + ', left=' + largeurEcran + ', scrollbars=no, resizable');
}

function pop_win(ref){  
	var strFeatures="toolbar=no,status=no,menubar=no,location=no";
	strFeatures=strFeatures+",scrollbars=no,resizable=no,height=419,width=400";
	window.open(ref,'aide',strFeatures);
}

function myPopup (url, largeur, hauteur) {
	var x, y;
	x = (screen.width-largeur)/2; // centrage horizontal
	y = (screen.height-hauteur)/2; // centrage vertical
	popup = window.open(url,'popup','status=yes, resizable=yes, scrollbars=yes, width='+largeur+', height='+hauteur+', screenX='+x+', screenY='+y+', left='+x+', top='+y);
	popup.focus();
}

// MathML support
// note IE does not support addEventListener Method!
if (window.addEventListener != null) {
    window.addEventListener("load", fixMathMLNamespace, false);
} else {
    window.attachEvent("load", fixMathMLNamespace);
}

function changeIcontext(msg){
	document.getElementById("icontext").innerHTML = msg;
	if(msg == '') {
    	document.getElementById("icontext").className = "icontextnobg";
    } else {
    	document.getElementById("icontext").className = "icontextbg";
	}
}

// google map functions

function GMultiMapload(maps) {
	if (GBrowserIsCompatible()) {
		for (var i in maps) {
    		var map = GMapload(maps[i]);
		}
	}
}

function GMapload(mapData) {
	var center = new GLatLng(mapData.center.lat, mapData.center.lng);
	var map = new GMap2(document.getElementById(mapData.id));
	map.setCenter(center, mapData.scale);
	map.setMapType(mapData.type);
	if (mapData.control == "large") {
		map.addControl(new GLargeMapControl());
	}
	else {
		map.addControl(new GSmallMapControl());
	}
	if (mapData.typeControl) {
		map.addControl(new GMapTypeControl());
	}
	for (var i in mapData.markers) {
		var point = new GLatLng(mapData.markers[i].lat, mapData.markers[i].lng);
		map.addOverlay(createMarker(point, mapData.markers[i].label, mapData.markers[i].icon));
	}

	return map;
}

function createMarker(point, label, iconData) {
	var icon = new GIcon();
	icon.image  = iconData.image;
	icon.shadow = iconData.shadow;
	icon.iconSize = new GSize(iconData.imageSize.width, iconData.imageSize.height);
	icon.shadowSize = new GSize(iconData.shadowSize.width, iconData.shadowSize.height);
	icon.iconAnchor = new GPoint(iconData.iconAnchor.x, iconData.iconAnchor.y);
	icon.infoWindowAnchor = new GPoint(iconData.infoWindowAnchor.x, iconData.infoWindowAnchor.y);
	icon.infoShadowAnchor = new GPoint(iconData.infoShadowAnchor.x, iconData.infoShadowAnchor.y);

	var marker = new GMarker(point, icon);
	if (label != "") {
		GEvent.addListener(marker, "click", function() {marker.openInfoWindow(label)});
	}

	return marker;
}

// mathML support

/* March 19, 2004 MathHTML (c) Peter Jipsen http://www.chapman.edu/~jipsen
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or (at
your option) any later version.
This program is distributed in the hope that it will be useful, but 
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License 
(at http://www.gnu.org/copyleft/gpl.html) for more details.*/


function fixMathMLNamespace() {

	var mmlnode = document.getElementsByTagName("math");
	var st,str,node,newnode;

	for (var i=0; i<mmlnode.length; i++) {
		if (document.createElementNS!=null)
			mmlnode[i].parentNode.replaceChild(convertMath(mmlnode[i]),mmlnode[i]);
		else { // convert for IE
			str = "";
			node = mmlnode[i];
			while (node.nodeName!="/MATH") {
				st = node.nodeName.toLowerCase();
				if (st=="#text") str += node.nodeValue;
				else {
					str += (st.slice(0,1)=="/" ? "</m:"+st.slice(1) : "<m:"+st);
					if (st.slice(0,1)!="/") 
						for(var j=0; j < node.attributes.length; j++)
							if (node.attributes[j].nodeValue!="italic" &&
									node.attributes[j].nodeValue!="" &&
									node.attributes[j].nodeValue!="inherit" &&
									node.attributes[j].nodeValue!=undefined)
								str += " "+node.attributes[j].nodeName+"="+
								"\""+node.attributes[j].nodeValue+"\"";
					str += ">";
				}

				node = node.nextSibling;
				node.parentNode.removeChild(node.previousSibling);
			}
			str += "</m:math>";
			newnode = document.createElement("span");
			node.parentNode.replaceChild(newnode,node);
			newnode.innerHTML = str;
		}
	}
}


function convertMath(node) {// for Gecko
	if (node.nodeType==1) {
		var newnode = document.createElementNS("http://www.w3.org/1998/Math/MathML",
				node.nodeName.toLowerCase());

		for(var i=0; i < node.attributes.length; i++)
			newnode.setAttribute(node.attributes[i].nodeName, node.attributes[i].nodeValue);

		for (var i=0; i<node.childNodes.length; i++) {
			var st = node.childNodes[i].nodeValue;
			if (st==null || st.slice(0,1)!=" " && st.slice(0,1)!="\n")    
				newnode.appendChild(convertMath(node.childNodes[i]));
		}
		return newnode;
	} else {
		return node;
	}
}