function top_load()
{win_load=1;
}

function appel_fenetre(dir,nom,taille_H, taille_V)
{var taille_ecran_H=screen.availWidth;
var taille_ecran_V=screen.availHeight;
var bordure_H=100;
var bordure_V= 50;
var taille_horiz=taille_ecran_H-bordure_H;
var taille_vertic=taille_ecran_V-bordure_V;
if (taille_H>taille_V)
{taille_vertic=Math.round((taille_V*taille_horiz)/taille_H);}
else {taille_horiz=Math.round((taille_H*taille_vertic)/taille_V);}

var wf = "";	
	wf = wf + "width=" + taille_horiz;
	wf = wf + ",height=" + taille_vertic;
	wf = wf + ",resizable=" + "no";
	wf = wf + ",scrollbars=" + "no";
	wf = wf + ",menubar=" + "no";
	wf = wf + ",toolbar=" + "no";
	wf = wf + ",directories=" + "no";
	wf = wf + ",location=" + "no";
	wf = wf + ",status=" + "no";
if (typeof toto != "undefined" ) {toto.close()};
if (dir == '' ) {var dir1=''} else {var dir1=dir + "/"};
var toto = window.open ("blc.htm?"+dir1+nom+".jpg","",wf);
toto.window.moveTo((taille_ecran_H-taille_horiz)/2,(taille_ecran_V-taille_vertic)/2);
}