/*------------------------------------------------------------
Document Text Sizer- Copyright 2003 - Taewook Kang.  All rights reserved.
Coded by: Taewook Kang (txkang.REMOVETHIS@hotmail.com)
Web Site: http://txkang.com
Script featured on Dynamic Drive (http://www.dynamicdrive.com)
	
Please retain this copyright notice in the script.
License is granted to user to reuse this code on 
their own website if, and only if, 
this entire copyright notice is included.
--------------------------------------------------------------*/

//Specify affected tags. Add or remove from list:
//var tgs = new Array( 'div','td','tr','span');
var tgs = new Array('body'); // Bepaal in css fontsize in % in body-tag. Zet deze standaard op 85 of 75%. Pas fontsize per element  zoals div of h1 aan in verhouding tot body. 

//Specify spectrum of different font sizes:
//var szs = new Array( 'xx-small','x-small','small','medium','large','x-large','xx-large' );
var szs = new Array('70%', '80%', '90%', '100%', '110%');
var startSz = 1;

function ts(trgt, inc) {
    if (!document.getElementById) return
    var d = document, cEl = null, sz = startSz, i, j, cTags;
    /*	
    sz += inc;
    if ( sz < 0 ) sz = 0;
    if ( sz > 4 ) sz = 4;
    startSz = sz;

*/
    newSize = startSz + inc;
    if (newSize < 0 || newSize > 4) { newSize = startSz; }
    if (inc == 99) { newSize = 1; };
    sz = newSize;
    startSz = sz;

    if (!(cEl = d.getElementById(trgt))) cEl = d.getElementsByTagName(trgt)[0];

    cEl.style.fontSize = szs[sz];

    for (i = 0; i < tgs.length; i++) {
        cTags = cEl.getElementsByTagName(tgs[i]);
        for (j = 0; j < cTags.length; j++) cTags[j].style.fontSize = szs[sz];
    }
    SetCookie(newSize - 1);
}


function CheckSize(trgt) {
    var px = parseInt(GetCookie('apenSize'));
    if (px) {
        if (px != 0) {
            ts(trgt, px);
        } 
    }
}
function getCookieVal(offset) {
    var endstr = document.cookie.indexOf(";", offset);
    if (endstr == -1)
        endstr = document.cookie.length;
    return unescape(document.cookie.substring(offset, endstr));
}
function GetCookie(name) {
    var arg = name + "=";
    var alen = arg.length;
    var clen = document.cookie.length;
    var i = 0;
    while (i < clen) {
        var j = i + alen;
        if (document.cookie.substring(i, j) == arg)
            return getCookieVal(j);
        i = document.cookie.indexOf(" ", i) + 1;
        if (i == 0)
            break;
    }
    return 0;
}
function SetCookie(value) {
    document.cookie = "apenSize=" + escape(value);
}