function check_all_group(checkobj, value)
{
	formobj = checkobj.form;
	for (var i = 0; i < formobj.elements.length; i++)
	{
		elm = formobj.elements[i];
		if (elm.type == "checkbox" && elm.value == value)
		{
			elm.checked = checkobj.checked;
		}
	}
}

function pre_img(){
	document.images.img.src=document.avatargallerij.gallerij.options[document.avatargallerij.gallerij.selectedIndex].value;
}