var ns6 = (!document.all && document.getElementById);
var ie = (document.all);
var netsc = (document.layers);

var a = new Array();
 a[0] = "sommar";
 a[1] = "000000";
 a[2] = "011000";
 a[3] = "011100";
 a[4] = "011200";
 a[5] = "011300";
 a[6] = "012000";
 a[7] = "020000";
 a[8] = "021100";
 a[9] = "021200";
a[10] = "022000";
a[11] = "030000";
a[12] = "031000";
a[13] = "032000";
a[14] = "033000";
a[15] = "034000";
a[16] = "040000";
a[17] = "041000";
a[18] = "042000";
a[19] = "042100";
a[20] = "042200";
a[21] = "050000";
a[22] = "051000";
a[23] = "052000";
a[24] = "053000";
a[25] = "060000";
a[26] = "061000";
a[27] = "062000";
a[28] = "063000";
a[29] = "070000";
a[30] = "071000";
a[31] = "072000";
a[32] = "080000";
a[33] = "081000";
a[34] = "082000";
a[35] = "083000";
a[36] = "083100";
a[37] = "083200";
a[38] = "c00000";

var cours = "vn";

var act = document.URL;
var pos = act.lastIndexOf(".html"); 
var numer = act.substring(pos-6,pos);
var i = 0;
while ((a[i]!=numer)&&(i<a.length)) {
i++;
}
actu=i;
var suiv=i+1; 
if (suiv==a.length) suiv=0;
var prec=i-1;
if (prec<0) prec=0;

function next() {
window.location.href = cours + a[suiv] + '.html';
}

function prev() {
window.location.href = cours + a[prec] + '.html';
}

function inte(){
ti = "#" + cours + a[actu];
if (numer=="sommar") ti = "#" + cours + numer;
if (numer=="biblio") ti = "#" + cours + numer;
if (numer=="integr") ti = "";
if (numer.substring(0,4)=="exer") ti = "";
window.location.href = cours + 'integr.html' + ti;
}

function exerc(){
}

function maj() {
l = Date.parse(document.lastModified);
lm = new Date(l);
j = lm.getDate();
j = (j<10)?"0"+j:j;  
m = lm.getMonth()+1;
m = (m<10)?"0"+m:m;  
y = lm.getFullYear();
maj = j + "." + m  + "." + y;
document.write('M&agrave;j: ' + maj);
}