var cookie;
var pair;
var efa_default = 76;											
var efa_increment = 10;											
var efa_maxsteps = 3;
var efa_max = efa_default+(efa_increment*efa_maxsteps);

var efa_bigger = ['Schrift ',		
				  'plus',	
				  '',	
				  '',										
				  '',											
				  '',											
				  '',											
				  '',											
				  '',											
				  '',											
				  ' (+)</li>'							
				  ]

var efa_reset = ['<li>',					
				 'minus',	
				 '',
				  '',										
				  '',											
				  '',											
				  '',											
				  '',											
				  '',											
				  '',											
				  ' (-)'		
				  ]

var efa_smaller = [ '',								//HTML to go before 'smaller' link
				   '',			//HTML to go inside 'smaller' anchor tag
				   '',
				   '',										
				   '',										
				   '',										
				   '',										
				   '',										
				   '',										
				   '',										
				   ''									//HTML to go after 'smaller' link
				   ]

function Efa_Fontsize(increment,bigger,reset,smaller,def,max) {

	this.w3c = (document.getElementById);

	this.ms = (document.all);

	this.userAgent = navigator.userAgent.toLowerCase();

	this.isOldOp = ((this.userAgent.indexOf('opera') != -1)&&(parseFloat(this.userAgent.substr(this.userAgent.indexOf('opera')+5)) <= 7));

	if ((this.w3c || this.ms) && !this.isOldOp && !this.isMacIE) {

		this.name = "efa_fontSize";

		this.cookieName = 'efaSize';

		this.increment = increment;

		this.def = def;

		this.max = max;

		this.defPx = Math.round(16*(def/100))

		this.base = 1;

		this.pref = this.getPref();

		this.testHTML = '<div id="efaTest" style="position:absolute;visibility:hidden;line-height:1em;">&nbsp;</div>';

		this.biggerLink = this.getLinkHtml(1,bigger);

		this.resetLink = this.getLinkHtml(0,reset);

		this.smallerLink = this.getLinkHtml(-1,smaller);

	} else {

		this.biggerLink = '';
		this.resetLink = '';
		this.smallerLink = '';

		this.efaInit = new Function('return true;');
	}

	// this.allLinks = this.biggerLink + this.resetLink + this.smallerLink; changed by maria
	   this.allLinks = this.biggerLink + this.resetLink;
}

Efa_Fontsize.prototype.efaInit = function() {

		document.writeln(this.testHTML);

		this.body = (this.w3c)?document.getElementsByTagName('body')[0].style:document.all.tags('body')[0].style;

		this.efaTest = (this.w3c)?document.getElementById('efaTest'):document.all['efaTest'];

		var h = (this.efaTest.clientHeight)?parseInt(this.efaTest.clientHeight):(this.efaTest.offsetHeight)?parseInt(this.efaTest.offsetHeight):999;

		if (h < this.defPx) this.base = this.defPx/h;

		this.body.fontSize = Math.round(this.pref*this.base) + '%';
}

Efa_Fontsize.prototype.getLinkHtml = function(direction,properties) {

	var html = properties[0] + '<a href="#" onclick="efa_fontSize.setSize(' + direction + '); return false;"';

	html += (properties[2])?'title="' + properties[2] + '"':'';

	html += (properties[3])?'class="' + properties[3] + '"':'';

	html += (properties[4])?'id="' + properties[4] + '"':'';

	html += (properties[5])?'name="' + properties[5] + '"':'';

	html += (properties[6])?'accesskey="' + properties[6] + '"':'';

	html += (properties[7])?'onmouseover="' + properties[7] + '"':'';

	html += (properties[8])?'onmouseout="' + properties[8] + '"':'';

	html += (properties[9])?'onfocus="' + properties[9] + '"':'';

	return html += '>'+ properties[1] + '<' + '/a>' + properties[10];
}

Efa_Fontsize.prototype.getPref = function() {

	var pref = this.getCookie(this.cookieName);

	if (pref) return parseInt(pref);

	else return this.def;
}

Efa_Fontsize.prototype.setSize = function(direction) {

	if (this.pref<this.max || direction<=0) {
		this.pref = (direction)?this.pref+(direction*this.increment):this.def;
		this.setCookie(this.cookieName,this.pref);

		this.body.fontSize = Math.round(this.pref*this.base) + '%';
		if ( (typeof sIFR == "function") && (typeof sIFR.rollback == "function")){	

			sIFR.rollback();
			sIFR_Replacement();
		}
	}
}

Efa_Fontsize.prototype.getCookie = function(cookieName) {
	var back 	= false;
	var cookies = document.cookie.split(';');
	

	var len = cookies.length;
	for(var i=0;i < len;i++) {
		cookie = cookies[i];		

		while (cookie.charAt(0)==' ') cookie = cookie.substring(1,cookie.length);

		pair = cookie.split('=');

		if (pair[0] == this.cookieName) back = pair[1];		
	}
	
	return back;
	

}

Efa_Fontsize.prototype.setCookie = function(cookieName,cookieValue) {
	cookies = document.cookie;
	

	var date = new Date();
	date.setTime(date.getTime()+(7*24*60*60*1000));	


	cookies = cookieName + '=' + cookieValue + '; expires=' + date.toGMTString() + '; path=/;';
	document.cookie = cookies;
	
}

var  efa_fontSize = new Efa_Fontsize(efa_increment,efa_bigger,efa_reset,efa_smaller,efa_default,efa_max);