function zoom (imageName, imageWidth, imageHeight, alt, posLeft, posTop) {

	newWindow = window.open("","newWindow","width="+imageWidth+",height="+imageHeight+",scrollbars=no,left="+posLeft+",top="+posTop);
	newWindow.document.open();
	newWindow.document.write('<html><title>'+alt+'</title><body bgcolor="#FFFFFF" leftmargin="0" topmargin="0" marginheight="0" marginwidth="0" onBlur="self.close()">'); 
	newWindow.document.write('<img src=\"'+imageName+'\" width='+imageWidth+' height='+imageHeight+' alt=\"'+alt+'\">');
	newWindow.document.write('</body></html>');
	newWindow.document.close();
	newWindow.focus();

}

var checkflag = "false";

function check(field) {
	if (checkflag == "false") {
		for (i = 0; i < field.length; i++) {
			field[i].checked = true;
			}
		checkflag = "true";
		return "Tout décocher";
		}
	else {
		for (i = 0; i < field.length; i++) {
			field[i].checked = false;
			}

		checkflag = "false";
		return "Tout cocher";
		}
	}

