//::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::://
//::::::::::: VENTANAS          ::::::::::::::::::::::::::::::::::::::://
//::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::://

function open_centered_window(pag,win,w,h,vscroll) {
    var window_height = h;
    var window_width = w;
    var window_left = (screen.availWidth / 2) - (window_width / 2);
    var window_top = (screen.availHeight / 2) - (window_height /2);
    var window_dimensions = "resizable=yes, width=" + window_width + ",height=" + window_height + ",left=" + window_left + ",top=" + window_top+" "+",scrollbars="+vscroll;
    
    window.open(pag,win,window_dimensions);
}


david = new Image (200,150)
david.src = "img/david.jpg"

david2 = new Image (200,150)
david2.src = "img/david2.jpg"

eugenio = new Image (200,150)
eugenio.src = "img/eugenio.jpg"

eugenio2 = new Image (200,150)
eugenio2.src = "img/eugenio2.jpg"

//::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::://
//::::::::::: PRINCIPAL         ::::::::::::::::::::::::::::::::::::::://
//::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::://

function load_image(imgName)
{
	imgOn = eval(imgName + ".src");
        document  [imgName].src = imgOn;
}

function load_alternate_image(imgName)
{
	imgOn = eval(imgName + "2.src");
        document  [imgName].src = imgOn;
}