function cassini(carte,coord,colnb,flag) {
/* ==========================================================
 Ce script a été réalisé par Jean-François BAQUET pour Gedail
 toute autre utilisation réclame son accord.
============================================================= */
	var alpha = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
	if ( coord.length != 2 ) { window.alert("Coordonnées " + coord + " incorrectes"); return; }
	var x = coord.substr(0,1);
	var y = coord.substr(1,1);
	var xn = alpha.indexOf(x);
	var yn = alpha.indexOf(y);
	if ((xn < 0) || (yn < 0)) { window.alert("Coordonnées " + coord + " incorrectes"); return; }
	if (xn == 0) { xn = 1; }
	if (xn == 25) { xn = 24; }
	if (yn == 0) { yn = 1; }
	if (yn == 25) { yn = 24; }
	img = new Array(3); cur = new Array(3);
	for (i=0; i < 3; i++) { img[i] = new Array(3); cur[i] = new Array(3); }
	img[0][0] = alpha.charAt(xn-1) + alpha.charAt(yn-1);
	img[0][1] = alpha.charAt(xn) + alpha.charAt(yn-1);
	img[0][2] = alpha.charAt(xn+1) + alpha.charAt(yn-1);
	img[1][0] = alpha.charAt(xn-1) + alpha.charAt(yn);
	img[1][1] = alpha.charAt(xn) + alpha.charAt(yn);
	img[1][2] = alpha.charAt(xn+1) + alpha.charAt(yn);
	img[2][0] = alpha.charAt(xn-1) + alpha.charAt(yn+1);
	img[2][1] = alpha.charAt(xn) + alpha.charAt(yn+1);
	img[2][2] = alpha.charAt(xn+1) + alpha.charAt(yn+1);
	cur[0][0] = 'nw-resize';
	cur[0][1] = 'n-resize';
	cur[0][2] = 'ne-resize';
	cur[1][0] = 'w-resize';
	cur[1][1] = 'crosshair';
	cur[1][2] = 'e-resize';
	cur[2][0] = 'sw-resize';
	cur[2][1] = 's-resize';
	cur[2][2] = 'se-resize';
	var dir = "http://gallica.bnf.fr/Fonds_ImagesZoom/077/07711";
	var num = Number(carte);
	if (num > 182 || num < 1 || num == 160) { 
		window.alert("La carte " + carte + " n'existe pas"); return; 
	}
	if (colnb == 'n&b') {
	incs = new Array(0,1,1,2,3,4,5,175,5,5,173,173,173,173,173,173,173,173,173,173,173,174,174,174,174,174,174,174,174,6,173,173,173,173,173,173,173,173,173,173,173,174,174,174,174,174,174,174,7,8,6,171,171,171,171,171,171,171,171,171,172,172,172,172,172,8,171,171,171,171,171,171,171,171,171,171,171,171,171,171,171,171,171,171,171,171,8,8,169,169,169,169,169,169,169,169,169,169,8,168,168,168,168,168,168,168,168,168,168,169,170,170,170,170,170,170,170,170,170,170,170,170,170,170,170,170,170,170,170,171,11,170,170,170,170,170,163,169,169,169,169,169,170,170,170,170,170,170,170,170,170,170,170,170,170,170,170,170,170,170,0,169,169,169,169,169,10,168,168,168,169,170,170,172,173,174,18,37,53,98,99,130,156);
	sizes = new Array (0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,235,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,234,0,0,0,0,0,235,0,0,0,0,0,0,0,0,0,0,0,0,0,0,235,536,0,0,0,234,0,0,0,0,0,0,0,0,0,0,234,0,0,0,0,0,0,0,0,0,536,0,0,235,0,0,0,0,234,0,235,0,0,0,0,0,0,0,0,0,235,0,0,0,0,0,0,0,536,536,0,0,0,536);   
	var nbcol = 'couleur';		         
	var alt = '-> Couleur';
	}
	else {
	incs = new Array(0,0,1,1,2,3,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,7,7,7,7,7,7,7,7,8,6,7,7,7,7,7,7,7,7,7,8,8,8,8,8,8,8,8,8,8,8,8,8,8,9,9,6,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,9,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,11,11,11,11,11,11,11,3,10,10,10,10,10,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,0,10,10,10,10,10,10,10,10,10,10,169,171,171,172,173,-150,-130,-111,-62,-61,-29,-1);
	sizes = new Array				   			        (0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,536,536,183,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,536,180,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,494,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,492,536,536,536,536,536,0,0,0,0,0,0,0,0,210,494,0,0,0,0,0,0,0,0,0,0,0,0,0,0,210,209,205,536,535,176,176,0,0,0,493,159,492,0,0,0,0,494,0,536);										    
	var nbcol = 'n&b';
	var alt = '-> Noir et Blanc';
	}
	var iwidth = 236;
	var iheight = 157;
	if (sizes[num] > 0) { 
		if (sizes[num] > 300) { 
			iheight = sizes[num]-300;
			iwidth = 157;
		}
		else {
			iwidth = sizes[num];
		}
	}
	num = incs[num]+num+503;
	var wwidth = 20+3*iwidth;
	var wheight = 20+3*iheight;
	var lpos = 0;
	var tpos = 0;
	if (screen.width > wwidth){ lpos = (screen.width-wwidth)/2; }
	if (screen.height > wheight){ tpos = (screen.height-wheight)/2; }
	if (self.name == "cassini") { self.opener.close(); }
	fenetreImg = window.open("", "_blank",'menubar=no,toolbar=no,location=no,directories=no,status=no,scrollbars=no,resizable=yes,copyhistory=no,width=' + wwidth  + ',height=' + wheight + ',left=' + lpos + ',top=' + tpos); 
	fenetreImg.focus();
	fenetreImg.document.write('<HTML><HEAD><TITLE>Carte de Cassini n&deg;' + carte + ' ' + coord + ' du site gallica.bnf.fr</TITLE>');
	fenetreImg.document.write('<SCRIPT LANGUAGE=\'javascript\' TYPE=\'text/javascript\' SRC=\'cassini.jvs\'></SCRIPT>');
	fenetreImg.document.write('</HEAD><BODY BGCOLOR="#F0F0F0"><CENTER>');
	for (i=0; i < 3; i++) { 
	    for (j=0; j < 3; j++) { 
		if ( i == 1 && j == 1) {
			fenetreImg.document.write('<A HREF="javascript:cassini(\'' + carte + '\',\'' + img[i][j] + '\',\'' + nbcol + '\',\'1\')">');
			fenetreImg.document.write('<IMG WIDTH='+ iwidth + ' HEIGHT='+ iheight + '  STYLE="cursor: ' + cur[i][j] + '" SRC="'+ dir + num + '/0000001/MAXI_' + img[i][j] + '.jpg" BORDER=0 ALT="' + alt + '"></A>');
		 }
		 else {
			fenetreImg.document.write('<A HREF="javascript:cassini(\'' + carte + '\',\'' + img[i][j] + '\',\'' + colnb + '\',\'1\')">');
			fenetreImg.document.write('<IMG WIDTH='+ iwidth + ' HEIGHT='+ iheight + '  STYLE="cursor: ' + cur[i][j] + '" SRC="'+ dir + num + '/0000001/MAXI_' + img[i][j] + '.jpg" BORDER=0></A>');
		 }
	    }
	}
	fenetreImg.document.write('</CENTER><\BODY></HTML>');
	fenetreImg.document.close();
	if (flag == 1) { self.close(); }
	return;
}