function createCookie(name,value,days) {
	days = days||7
	if(days!=0) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}
function readCookie(name) {
	name += '='
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(name) == 0) return c.substring(name.length,c.length);
	}
	return null;
}
function eraseCookie(name) {createCookie(name,"",-1)}
function ini_sel(selId) {
	if(!$(selId)) return;
	var c = readCookie(selId)||''
	each($(selId).getElementsByTagName('option'), function(e) {
		if(e.value==c) e.selected="selected"
		else e.selected=''
	})
}
function saveSel() { createCookie(this.id, this.value) }
function restore_defaults() {
	each($('safe', 'imgsz', 'imgc'), function(e) {eraseCookie(e.id), ini_sel(e.id)})
}
function ini_selects() { each($('safe', 'imgsz', 'imgc'), function(e) { if(e) {e.onchange=saveSel; ini_sel(e.id)} }) }