var efa_default = 100;
var efa_increment = 9;
var max_zoom = 150; //115
var min_zoom = 100;	//55

var efa_bigger = ['',															//HTML to go before 'bigger' link
				  '<img class="margsmall" id="plus_icon" src="img/plus.gif">',	//HTML to go inside 'bigger' anchor tag
				  '',															//title attribute
				  '',															//class attribute
				  '',															//id attribute
				  '',															//name attribute
				  '',															//accesskey attribute
				  '',															//onmouseover attribute
				  '',															//onmouseout attribute
				  '',															//onfocus attribute
				  ''															//HTML to go after 'bigger' link
				  ]		

var efa_reset = [ '',
				  '',													//HTML to go before 'reset' link
				  '',													//HTML to go inside 'reset' anchor tag
				  '',													//class attribute
				  '',													//id attribute
				  '',													//name attribute
				  '',													//accesskey attribute
				  '',													//onmouseover attribute
				  '',													//onmouseout attribute
				  '',													//onfocus attribute
				  ''													//HTML to go after 'reset' link
				  ]

var efa_smaller = ['',
				   '<img class="margsmall" id="minus_icon" src="img/minus.gif">',		//HTML to go before 'smaller' link
				   '',															//HTML to go inside 'smaller' anchor tag
				   '',															//class attribute
				   '',															//id attribute
				   '',															//name attribute
				   '',															//accesskey attribute
				   '',															//onmouseover attribute
				   '',															//onmouseout attribute
				   '',															//onfocus attribute
				   ''															//HTML to go after 'smaller' link
				   ]

function Efa_Fontsize(increment,bigger,reset,smaller,def) {
this.w3c = (document.getElementById);
this.ms = (document.all);
this.userAgent = navigator.userAgent.toLowerCase();
this.isMacIE = ((this.userAgent.indexOf('msie') != -1) && (this.userAgent.indexOf('mac') != -1) && (this.userAgent.indexOf('opera') == -1));
this.isOldOpfake = ((this.userAgent.indexOf('opera') != -1)&&(parseFloat(this.userAgent.substr(this.userAgent.indexOf('opera')+5)) <= 7));
//for proper Opera dedection if Operas User Agent Switching is aktive - added by grishan Jan. 2006
this.isOldOpreal = ((this.userAgent.indexOf('opera') != -1)&&(parseFloat(this.userAgent.substr(this.userAgent.indexOf('opera')+6)) <= 7));

if ((this.w3c || this.ms) && !this.isOldOpfake && !this.isMacIE && !this.isOldOpreal) {
this.name = "efa_fontSize";
this.cookieName = 'efaSize';
this.increment = increment;
this.def = def;
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;"></div>';
this.smallerLink = this.getLinkHtml(-1,smaller);
this.biggerLink = this.getLinkHtml(1,bigger);
} else {
this.smallerLink = '';
this.biggerLink = '';
this.efaInit = new Function('return true;');
}

this.allLinks = this.smallerLink+this.biggerLink;
}

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="#" style="background: transparent;" 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) {
this.pref = (direction)?this.pref+(direction*this.increment):this.def;
//maximum Zoom (in Percent) added by grishan Sept. 2005
if ( this.pref >= max_zoom ) {
this.pref = max_zoom;
this.setCookie(this.cookieName,this.pref);
this.body.fontSize = Math.round(this.pref*this.base) + '%';
}
//minimum Zoom (in Percent) added by grishan Sept. 2005
if ( this.pref <= min_zoom ) {
this.pref = min_zoom;
this.setCookie(this.cookieName,this.pref);
this.body.fontSize = Math.round(this.pref*this.base) + '%';
}

else {
this.setCookie(this.cookieName,this.pref);
this.body.fontSize = Math.round(this.pref*this.base) + '%';
}
}

Efa_Fontsize.prototype.getCookie = function(cookieName) {
var cookie = cookieManager.getCookie(cookieName);
return (cookie)?cookie:false;
}

Efa_Fontsize.prototype.setCookie = function(cookieName,cookieValue) {
return cookieManager.setCookie(cookieName,cookieValue);
}

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