// Modified from Bill Dortch's Cookie Functions (hidaho.com) 
// (found in JavaScript Bible)
function setCookie(name,value,days,path,domain,secure) {
  var expires, date;
  if (typeof days == "number") {
    date = new Date();
    date.setTime( date.getTime() + (days*60*60*1000) );
		expires = date.toGMTString();
  }
  document.cookie = name + "=" + escape(value) +
    ((expires) ? "; expires=" + expires : "") +
    ((path) ? "; path=" + path : "") +
    ((domain) ? "; domain=" + domain : "") +
    ((secure) ? "; secure" : "");
}

// Modified from Jesse Chisholm or Scott Andrew Lepera ?
// (found at both www.dansteinman.com/dynapi/ and www.scottandrew.com/junkyard/js/)
function getCookie(name) {
  var nameq = name + "=";
  var c_ar = document.cookie.split(';');
  for (var i=0; i<c_ar.length; i++) {
    var c = c_ar[i];
    while (c.charAt(0)==' ') c = c.substring(1,c.length);
    if (c.indexOf(nameq) == 0) return unescape( c.substring(nameq.length, c.length) );
  }
  return null;
}

// from Bill Dortch's Cookie Functions (hidaho.com) 
function deleteCookie(name,path,domain) {
  if (getCookie(name)) {
    document.cookie = name + "=" +
      ((path) ? "; path=" + path : "") +
      ((domain) ? "; domain=" + domain : "") +
      "; expires=Thu, 01-Jan-70 00:00:01 GMT";
  }
}
var akt = document.getElementById('content');
var fontSizer = {
  // sizeUnit and defaultSize for body.style.fontSize
  sizeUnit: "%",
  defaultSize: 80,
  // numbers (same unit as sizeUnit)
  maxSize:     250,
  minSize:     80,

  init: function() {
    if ( !document.body || !document.getElementById ) return;
    var size = window.location.search? window.location.search.slice(1): getCookie("fontSize");
    //var size = document.getElementById('fontsize').value;
	size = !isNaN( parseFloat(size) )? parseFloat(size): this.defaultSize;
    // in case default unit changed or size passed in url out of range
    if ( size > this.maxSize || size < this.minSize ) size = this.defaultSize;
   
    document.getElementById('content').style.fontSize = size + this.sizeUnit;
  },
  
  adjust: function(inc) {
  	
    var size = parseFloat( document.getElementById('content').style.fontSize );
    /* !!!!! Änderung  Anfang !!!! */
    size = !isNaN( parseFloat(size) )? parseFloat(size): this.defaultSize;
    /* !!!!! Änderung Ende  !!!! */
    size += inc;
    // Test against max and min sizes 
    if (inc > 0) size = Math.min(size, this.maxSize);
    else if(inc < 0) size = Math.max(size, this.minSize);
	else size = 100;
	//document.getElementById('fontsize').value = size;
    setCookie( "fontSize", size, 180, "/" );
    document.getElementById('content').style.fontSize = size + this.sizeUnit;
  },

  reset: function() {
    document.getElementById('content').style.fontSize = this.defaultSize + this.sizeUnit;
    deleteCookie("fontSize", "/");
	//document.getElementById('fontsize').value = 100;
  }
  
}

var spEmStepWidth 	= 0.250;	// increase/decrease font every step by spEmStepWidth
var spEmBasis 		= 1.5;		// font size of spArticleBody at startup
//var spEmBasis 		= 1;		// font size of spArticleBody at startup
var spEmStep 		= -1;		// counter for current step (leave as 0)
var spEmMaxSteps 	= 2;		// maximum steps alowed

function FontSizer(spInc, spReset) {
spEmBody = document.getElementById('content');
//var oldvalue = spEmBody.style.fontSize.replace(/em/, "");

	// reset font size
	if (spReset)
	spEmStep = -1;
	// inside allowed steps?
	if (Math.abs(spEmStep + spInc) <= spEmMaxSteps) {
	// increase/decrease spEmStep
	spEmStep += spInc;
	// set new font size for every tag inside "spEmStep"
	if(spInc==0){
		spEmFontSize = 1.0;
	}else{
		spEmFontSize = spEmStep * spEmStepWidth + spEmBasis;
	}
	//get spArticleBody
	
	//		spEmBody = document.getElementsByTagName('body')[0];
	// set new fot size
	
	spEmBody.style.fontSize = spEmFontSize + "em";
/*
	var oldvalue = spEmFontSize-spEmStepWidth;
	var newheight = spEmFontSize*590;
	if(newheight<590) newheight=590;

document.getElementById('content_frame').style.height = newheight + "px";
*/
}
/*
if (spEmStep == -spEmMaxSteps) {
document.getElementById("spFontsizeMinus").src = "/static/sys/v8/icons/spFontsizeMinus_lo.jpg";
}
else if (spEmStep == spEmMaxSteps) {
document.getElementById("spFontsizePlus").src = "/static/sys/v8/icons/spFontsizePlus_lo.jpg";
}
else {
document.getElementById("spFontsizePlus").src = "/static/sys/v8/icons/spFontsizePlus.jpg";
document.getElementById("spFontsizeMinus").src = "/static/sys/v8/icons/spFontsizeMinus.jpg";
}
*/
}