function mOver(n)
  {
   document.images[id_img[n]].src = h_img[n].src;
  }

function mOverx(n)
  {
   document.images[id_img[n]].src = h_imgx[n].src;
  }

function mOut(n)
  {
   document.images[id_img[n]].src = n_img[n].src;
  }

function mOutx(n)
  {
   document.images[id_img[n]].src = n_imgx[n].src;
  }

function imgArray(n)
{
  this.length = n;
  for (var i=0; i<n; i++)
    this[i] = new Image();
  return this;
}

id_img = new Array(7);
id_img[0] = "btn1"; 
id_img[1] = "btn2"; 
id_img[2] = "btn3"; 
id_img[3] = "btn4"; 
id_img[4] = "btn5"; 
id_img[5] = "btn6"; 
id_img[6] = "btn7"; 

n_img = new imgArray(7);
n_img[0].src = "img/menu01.jpg"; 
n_img[1].src = "img/menu02.jpg"; 
n_img[2].src = "img/menu03.jpg"; 
n_img[3].src = "img/menu04.jpg"; 
n_img[4].src = "img/menu05.jpg"; 
n_img[5].src = "img/menu06.jpg"; 
n_img[6].src = "img/menu07.jpg";

h_img = new imgArray(7);
h_img[0].src = "img/menu01f.jpg"; 
h_img[1].src = "img/menu02f.jpg"; 
h_img[2].src = "img/menu03f.jpg"; 
h_img[3].src = "img/menu04f.jpg"; 
h_img[4].src = "img/menu05f.jpg"; 
h_img[5].src = "img/menu06f.jpg"; 
h_img[6].src = "img/menu07f.jpg";

n_imgx = new imgArray(7);
n_imgx[0].src = "img/btn01.jpg"; 
n_imgx[1].src = "img/btn02.jpg"; 
n_imgx[2].src = "img/btn03.jpg"; 
n_imgx[3].src = "img/btn04.jpg"; 
n_imgx[4].src = "img/btn05.jpg"; 
n_imgx[5].src = "img/btn06.jpg"; 
n_imgx[6].src = "img/btn07.jpg";

h_imgx = new imgArray(7);
h_imgx[0].src = "img/btn01f.jpg"; 
h_imgx[1].src = "img/btn02f.jpg"; 
h_imgx[2].src = "img/btn03f.jpg"; 
h_imgx[3].src = "img/btn04f.jpg"; 
h_imgx[4].src = "img/btn05f.jpg"; 
h_imgx[5].src = "img/btn06f.jpg"; 
h_imgx[6].src = "img/btn07f.jpg";


var okno

function open_browser( filename ) 
{

if (!okno || okno.closed)
 {
  okno=window.open ( filename, "mexicobrowser","toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=0,resizable=0,fullscreen=0 ,height=460,width=460,top=0,left=0")
 }
else 
 { 
  okno.location=filename;
  okno.focus() 
 }

}               


function open_map( filename ) 
{
if (!okno || okno.closed)
 {
  okno=window.open ( filename, "mexicobrowser","toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=1,fullscreen=0 ,height=500,width=770,top=0,left=0")
 }
else 
 { 
  okno.location=filename;
  okno.focus() 
 }

}


function goBack(a){
       history.back(1);
}

function openWindow(loc, sizeX, sizeY, nazwa){
       var maxX=screen.availWidth;
       var maxY=screen.availHeight;
       var windowleft=(maxX-sizeX)/2;
       var windowtop=(maxY-sizeY)/2;
       var file = loc;
       var nazwa;
       this.name="main";
       okno=window.open(file,nazwa,'toolbar=no,scrollbars=yes,resizable=yes,status=no,location=no,directories=no,width='+eval(sizeX)+',height='+eval(sizeY)+',menubar=no,top='+eval(windowtop)+',left='+eval(windowleft))
       okno.focus();
}

function openWindowStat(loc, sizeX, sizeY, nazwa){
       var maxX=screen.availWidth;
       var maxY=screen.availHeight;
       var windowleft=(maxX-sizeX)/2;
       var windowtop=(maxY-sizeY)/2;
       var file = loc;
       var nazwa;
       this.name="main";
       okno=window.open(file,nazwa,'toolbar=no,scrollbars=yes,resizable=yes,status=yes,location=no,directories=no,width='+eval(sizeX)+',height='+eval(sizeY)+',menubar=no,top='+eval(windowtop)+',left='+eval(windowleft))
       okno.focus();
}