function create_checkbox(name,img_id,id)
{
	var val = getMyCookie(name);
	if (val=='')
		document.write("<a href=\"javascript:swap_checkbox('"+name+"','"+img_id+"','"+id+"');\"><img id=\""+img_id+"\" src=\"/img/dotunselected.png\" border=\"0\" /></a>");
	else
		document.write("<a href=\"javascript:swap_checkbox('"+name+"','"+img_id+"','"+id+"');\"><img id=\""+img_id+"\" src=\"/img/dotselected.png\" border=\"0\" /></a>");
}

function swap_checkbox(name,img_id,id)
{
	var img = document.getElementById(img_id);
	var img_src = img.src;

	if (img_src.indexOf('dotunselected.png')!=-1)
	{
		img.src='/img/dotselected.png';
		setMyCookie(name,id,7);
	}
	else
	{
		img.src='/img/dotunselected.png';
		setMyCookie(name,-1,0);
	}
}

function setMyCookie(nom,valeur,jours)
{
	var expDate = new Date();
	expDate.setTime(expDate.getTime() + (jours * 24 * 3600 * 1000));
	document.cookie = nom + "=" + escape(valeur) + ";expires=" + expDate.toGMTString() + ";path=/design/";
}

function getMyCookie(nom) 
{
	deb = document.cookie.indexOf(nom + "=");
	if (deb >= 0) 
	{
		deb += nom.length + 1;
		fin = document.cookie.indexOf(";",deb);
		if (fin < 0) fin = document.cookie.length;
		return unescape(document.cookie.substring(deb,fin));
	}
	return ""
}

function toggle_categories(o,c,i)
{
	if (o)
	{
		result=document.getElementById("form_col");
		if (result)
		{
			if(o.checked)
				result.value = result.value | o.value;
			else
				result.value = result.value & ~o.value;
				
			url = '/design/design-connections/design-schools';
			if (c) url = url + '/' + c;
			if (i) url = url + '/' + i;
			if (result && (result.value != 0)) url = url + '/' +  result.value;
			document.location = url;
		}
	}
}