function toggle(div_id, top_text, alt_text)
{		
	if(document.getElementById("_" + div_id + "_top").style.display == "block")
	{
		document.getElementById("_" + div_id + "_top").style.display = "none";
		document.getElementById("_" + div_id).style.display = "block";
		document.getElementById(div_id + "_toggle_link").innerHTML = "in deze categorie de top " + top_text + " laten zien";
		document.getElementById("toggle_image_" + div_id).src = "/site/afbeeldingen/toggle_up.gif";
		Set_Cookie(div_id, "normal", 30, "/", "", "");
	}
	else
	{
		document.getElementById("_" + div_id + "_top").style.display = "block";
		document.getElementById("_" + div_id).style.display = "none";
		document.getElementById(div_id + "_toggle_link").innerHTML = "alle " + alt_text + " voorbeelden in deze categorie";
		document.getElementById("toggle_image_" + div_id).src = "/site/afbeeldingen/toggle_down.gif";
		Set_Cookie(div_id, "top", 30, "/", "", "");
	}		
}

function Set_Cookie(name, value, expires, path, domain, secure )
{
 // set time, it's in milliseconds
 var today = new Date();
 today.setTime( today.getTime() );

 /*
 if the expires variable is set, make the correct
 expires time, the current script below will set
 it for x number of days, to make it for hours,
 delete * 24, for minutes, delete * 60 * 24
 */
 if ( expires )
 {
  expires = expires * 1000 * 60 * 60 * 24;
 }

 var expires_date = new Date( today.getTime() + (expires) );

 document.cookie = name + "=" +escape( value ) +
 ( ( expires ) ? ";expires=" + expires_date.toGMTString() : "" ) +
 ( ( path ) ? ";path=" + path : "" ) +
 ( ( domain ) ? ";domain=" + domain : "" ) +
 ( ( secure ) ? ";secure" : "" );
}