var saveWidth = 0;
var scaled = false;
var saveContent = 0;
var saveBody = 0;
var saveBox_centrale = 0;
var imgsw=screen.width/1.5;
function scaleImg(what){
    what = document.getElementById(what);
    if (navigator.appName=="Netscape") winW = window.innerWidth;
    if (navigator.appName.indexOf("Microsoft")!=-1) winW = document.body.offsetWidth;
    if (what.width>imgsw || saveWidth>imgsw) {
    	if (scaled)
    	{
    		what.width=saveWidth;
		what.alt="what.alt";
		scaled = false ;
		what.style.cursor = "pointer";
    	}else{
    		saveWidth = what.width;
    		what.style.cursor = "pointer";
    		what.width=imgsw;
		what.alt="what.alt";
		scaled = true;
    	}
    }
}