if (document.images) {

//button 1
im1On = new Image();
im1On.src = "images/ic1_over.gif";
im1Over = new Image();
im1Over.src = "images/ic1.gif";

//button 2
im2On = new Image();
im2On.src = "images/ic2_over.gif";
im2Over = new Image();
im2Over.src = "images/ic2.gif";


//button 3
im3On = new Image();
im3On.src = "images/ic3_over.gif";
im3Over = new Image();
im3Over.src = "images/ic3.gif";

//button 4
im4On = new Image();
im4On.src = "images/ic4_over.gif";
im4Over = new Image();
im4Over.src = "images/ic4.gif";
	}
	
	function imgOn(imgName) {
if (document.images) {
document[imgName].src = eval(imgName + "On.src"); 
	} 
}


	function imgOff(imgName) { 
if (document.images) { 
document[imgName].src = eval(imgName + "Over.src"); 
	} 
}
function printpage() {
window.print();  
}

var newwin;
function launchwin(winurl,winname,winfeatures)
{	newwin = window.open(winurl,winname,winfeatures);
	newwin.focus();
}

/* plus de clic droit */

if(document.getElementById) document.oncontextmenu=function() {return false};
else {
	if(document.captureEvents) document.captureEvents(Event.MOUSEDOWN);
	document.onmousedown=function(e) {
		if(document.all) {if(event.button==3||event.button==2) return false}
		else if(document.layers) {if(e.which==3||e.which==2) return false}
	}
}
/* plus de clic droit */