// JavaScript Document

function init (szDivID) {
var widthf=(document.getElementById(szDivID).offsetWidth); //recupere la taille de la page (width)
var heightf=(document.getElementById(szDivID).offsetHeight); //recupere la taille de la page (width)
a = 0; // taille de depart (left)
b = heightf; // Position de départ (top)
fin = widthf; //position de fin
idimg=szDivID;
boucle (b,fin,idimg);
document.getElementById(idimg).style.visibility = "visible";  
}

function boucle (b,fin,idimg) {
a = a + 10; // Avance de -x pixels (left) à chaque boucle
b = b + 0; // Avance de x pixels (top) à chaque boucle
document.getElementById(idimg).style.width = a + "px";
document.getElementById(idimg).style.height = b + "px"; 
if(a==fin) {a = 0;} else {setTimeout("boucle(b,fin,idimg)",1);} // Délai entre chaque boucle
}

function closebox (szDivID) {
document.getElementById(szDivID).style.visibility = "hidden";
}

function opacity(id, opacStart, opacEnd, millisec) { 
    //speed for each frame 
    var speed = Math.round(millisec / 100); 
    var timer = 0; 

    //determine the direction for the blending, if start and end are the same nothing happens 
    if(opacStart > opacEnd) { 
        for(i = opacStart; i >= opacEnd; i--) { 
            setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed)); 
            timer++; 
        } 
    } else if(opacStart < opacEnd) { 
        for(i = opacStart; i <= opacEnd; i++) 
            { 
            setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed)); 
            timer++; 
        } 
    } 
} 

//change the opacity for different browsers 
function changeOpac(opacity, id) { 
    var object = document.getElementById(id).style; 
    object.opacity = (opacity / 100); 
    object.MozOpacity = (opacity / 100); 
    object.KhtmlOpacity = (opacity / 100); 
    object.filter = "alpha(opacity=" + opacity + ")"; 
}