//$Id: fontSize.js,v 1.1.1.1 2005/02/03 12:39:36 martin Exp $
var sizeMax = 4;
var sizeMin = 1;
var currSize;
var cookie;

function startUp(aSize)
{  if (aSize >= sizeMax )
     { aSize = sizeMax;
       if (document.images)
         { document.images['plus'].src = '../images/letter_leeg.gif';
            if (document.all)
             { document.all.groter.href= "";
             //  document.all.groter.title = "maximale vergroting is bereikt";
             }
         }
     }
   if (aSize == sizeMin)
    { if (document.images)
      { document.images['min'].src = '../images/letter_leeg.gif';
        if (document.all)
         { document.all.kleiner.href= "";
         //  document.all.kleiner.title = "maximale verkleining is bereikt";
         }
      }
    }
}


function reSize(action) {
   if (action == 'groter')
     { currSize ++;
        if (document.images)
        { document.images['min'].src = '../images/letter_min.gif';
          if (document.all)
            { document.all.groter.href= '#';
            }
        }
        if (currSize >= sizeMax )
         { currSize = sizeMax;
          if (document.images)
           {  document.images['plus'].src = '../images/letter_leeg.gif';
              if (document.all)
               { document.all.groter.href= "";
               //  document.all.groter.title = "maximale vergroting is bereikt";
               }
           }
         }
     }//bigger

    if (action == 'kleiner')
     { currSize --;
       if (document.images)
        { document.images['plus'].src = '../images/letter_plus.gif';
          if (document.all)
            { document.all.kleiner.href= '#';}
        }
        if (currSize <= sizeMin)
         { currSize = sizeMin;  }
            if (currSize == sizeMin)
             {
               if (document.images)
                 {  document.images['min'].src = '../images/letter_leeg.gif';
                    if (document.all)
                      { document.all.kleiner.href= "";
                       // document.all.kleiner.title = "maximale verkleining is bereikt";
                      }
                 }
             }
     }//smaller
    //window.status = "Action: " + action + " currSize: " + currSize;
    createCookie("currSize", currSize, 365);
    setActiveStyleSheet(currSize);
    startUp(currSize);
}

function setActiveStyleSheet(title) {
	var i, a, main;
    createCookie("currSize", currSize, 365);
    for(i=0; (a = document.getElementsByTagName("link")[i]); i++)
    { if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title"))
        { a.disabled = true;
          if(a.getAttribute("title") == title) a.disabled = false;
        }
    }
   for(i=0; (a = parent.document.getElementsByTagName("link")[i]); i++)
    { if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title"))
        { a.disabled = true;
          if(a.getAttribute("title") == title) a.disabled = false;
        }
    }

}

function getActiveStyleSheet() {
    var i, a;
    for(i=0; (a = document.getElementsByTagName("link")[i]); i++)
      { if(a.getAttribute("rel").indexOf("style") != -1
        && a.getAttribute("title")
        && !a.disabled)
            return a.getAttribute("title");
    }

    return null;
}
 
function getPreferredStyleSheet() {
    var i, a;
    for(i=0; (a = document.getElementsByTagName("link")[i]); i++)
    { if(a.getAttribute("rel").indexOf("style") != -1
      && a.getAttribute("rel").indexOf("alt") == -1
      && a.getAttribute("title"))
        return a.getAttribute("title");
    }
    return null;
}

function createCookie(name,value,days) {
    if (days)
    { var date = new Date();
      date.setTime(date.getTime()+(days*24*60*60*1000));
      var expires = "; expires="+date.toGMTString();
    }
    else expires = "";
    document.cookie = name+"="+escape(value)+expires+"; path=/";
}

function readCookie(name) {
    var nameEQ = 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(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
    }
    return null;
}

window.onload = function(e) {
//    cookie = readCookie("currSize");
//    currSize = cookie ? cookie : 2;
}

window.onunload = function(e) {
//startUp(currSize);
}

    cookie = readCookie("currSize");
    currSize = cookie ? cookie : 1;
    //alert("onLoad: currSize:"+currSize);
    reSize("");
    startUp(currSize);
    setActiveStyleSheet(currSize);