// JavaScript Document
<!-- Ecriture dans les divs
function writediv(id,texte)
{
	document.getElementById(id).innerHTML = texte;
}
function deletediv(id)
{
	document.getElementById(id).innerHTML = "";
}

function replace_img()
{
	var rep = document.getElementById("img_min").innerHTML;
	
	rep = rep.replace (/_s.jpg/g,"_m.jpg");
	rep = rep.replace (/height="52"/g,'height="240"');
	rep = rep.replace (/width="60"/g,'width="300"');
	rep = rep.replace (/height=52/g,'height="240"');
	rep = rep.replace (/width=60/g,'width="300"');
	rep = rep.replace ('onmouseover="replace_img()"',' ');
	rep = rep.replace ('onmouseover="replace_img()"',' ');
	writediv("image_center",rep);
}

function replace_img1()
{
	var rep = document.getElementById("img_min1").innerHTML;
	rep = rep.replace (/_s.jpg/g,"_m.jpg");
	rep = rep.replace (/height="52"/g,'height="240"');
	rep = rep.replace (/width="60"/g,'width="300"');
	rep = rep.replace (/height=52/g,'height="240"');
	rep = rep.replace (/width=60/g,'width="300"');
	rep = rep.replace ('onmouseover="replace_img1()"',' ');
	rep = rep.replace ('onmouseover="replace_img1()"',' ');
	writediv("image_center",rep);
}

function replace_img2()
{
	var rep = document.getElementById("img_min2").innerHTML;
	//alert(rep);
	rep = rep.replace (/_s.jpg/g,'_m.jpg');
	rep = rep.replace (/height="52"/g,'height="240"');
	rep = rep.replace (/width="60"/g,'width="300"');
	rep = rep.replace (/height=52/g,'height="240"');
	rep = rep.replace (/width=60/g,'width="300"');
	rep = rep.replace ('onmouseover="replace_img2()"',' ');
	rep = rep.replace ('onmouseover="replace_img2()"',' ');
	//alert(rep);
	writediv("image_center",rep);
}
<!-- Fonction file()
function file(fichier)
{
if(window.XMLHttpRequest) // FIREFOX
xhr_object = new XMLHttpRequest();
else if(window.ActiveXObject) // IE
xhr_object = new ActiveXObject("Microsoft.XMLHTTP");
else
return(false);
xhr_object.open("GET", fichier, false);
xhr_object.send(null);
if(xhr_object.readyState == 4) return(xhr_object.responseText);
else return(false);
}