// font_sizer.js
/*
Orginalscript von einfach-fuer-alle.de thx
*/

// Default
var fontgr = 6.3;

var containersDef = [				
             	["fattext","class",0],
             	["topnav","class",3],
			["verticalBarTopnav","class",3],
			["footnav","class",-1],
			["verticalBarFootnav","class",-1],						
               ["subnavtext","class",2],
               ["subnavtexthot","class",2],
               ["searchlink","class",1],
			["SearchTable","class",0]
		];

var containers = [	
                    ["DIV","tag",0],
			["SPAN","tag",0],
			["TD","tag",0]
		];
		
		var containers = [	
			["TD","tag",0], 
			["TH","tag",0]
		];
		


function initFonts() {
	var cookieFontSize = 	getCookie( "MyFontGr" );
	//alert("cookieFontSize=" + cookieFontSize );
	
	if( cookieFontSize ) {
	
		setzeFontGr(cookieFontSize);
	
	}

}

function setzeFontStandard() {
	fontgr = 6.3;
	//containers = containersDef ;
	
	setzeFontGr(fontgr);

}

function modFontGr(neu) {
	//alert("modFontGr neu=" + neu);
	fontgr= fontgr + neu;

	//alert("fontgr+ neu =" + fontgr);
	if (fontgr>20)	fontgr=20;
	if (fontgr<1)	fontgr=1;
	setzeFontGr(fontgr);

}



function setzeFontGr(neu) {
	//alert("setzeFontGr neu=" + neu);
	var curr,obj,tagArray,name,idType,size,extraSize,num;
	var limit = containers.length;

	//fontgr=neu;
		
//alert("limit=" + limit);

	try {
	
		for (var i = 0; i < limit; i++) {

			curr = containers[i];
			name = curr[0];
			idType = curr[1];
			extraSize = curr[2] ;
			size = neu + extraSize;				
				
//alert(name + " - size=" + size );
			
			
			if (idType=="id") {
				//alert("name1=" + name);
				obj = document.getElementById(name);
				if (obj && (typeof obj == "object")) obj.style.fontSize = (size * .1) + "em";
				
			} else if(idType== "class" ) {
				//alert("name2=" + name);
				//alert(name + " - size=" + size ); 
				setStyleByClass("DIV",name,"fontSize", (size * .1) + "em" );				
				setStyleByClass("SPAN",name,"fontSize", (size * .1) + "em" )	;	
				setStyleByClass("A",name,"fontSize", (size * .1) + "em" )	;						
				/****			 
				tagArray = document.getElementsByClassName(name);	 
				num = tagArray.length;
				for (var n = 0; n < num; n++) {
					obj = tagArray.item(n);
					if (obj && (typeof obj == "object")) obj.style.fontSize = (size * .1) + "em";
				}
				******/
		
			} else if(idType== "tag" ) {
				//alert("name3=" + name);
				tagArray = document.getElementsByTagName(name);
				num = tagArray.length;
				for (var n = 0; n < num; n++) {
					obj = tagArray.item(n);
					if (obj && (typeof obj == "object")) obj.style.fontSize = (size * .1) + "em";
				}
			}
		}
	
	var id = "MyFontGr";
	var valu = neu/10 ;
	//var valu = neu ;	
	var never = new Date()
	never.setTime(never.getTime() + 2000*24*60*60*1000);
	var expString = never.toGMTString();	
	var expires = expString;
	var path = "/";
	var domain = "";
	var secure = "";
	setCookie( id, valu, expires, path, domain, secure) ;
	
	
	}
	catch(e) {
		alert("setzeFontGr: " + e.message );
		return;
	}
	
	
}



// cookies

function xxgetCookie(name){
	var doccok=document.cookie; 
	var coknam=name+"=";
	var coklen=doccok.length;
	var cokbeg=0;
		while(cokbeg<coklen){
		var valbeg=cokbeg+coknam.length;
		if (doccok.substring(cokbeg,valbeg)==coknam) { 
			var valend=doccok.indexOf(";",valbeg);
			if(valend==-1)valend=coklen;
			return unescape(doccok.substring(valbeg, valend));
		}
		cokbeg = doccok.indexOf(" ", cokbeg) + 1;
		if (cokbeg == 0) break;
	}
	return null;
}

function xxxsetCookie (name, value, expires) {
	if (!expires) expires = new Date();
	expires.setTime (expires.getTime() +  (24 * 60 * 60 * 1000 * 365)); 
	document.cookie = name + "=" + escape (value) + "; expires=" + expires.toGMTString() +  "; path=/";
}

function setCookieArray(name){
	this.length = setCookieArray.arguments.length - 1;
	for (var i = 0; i < this.length; i++) {
		this[i + 1] = setCookieArray.arguments[i + 1]
		setCookie (name + i, this[i + 1]);
	}
}

function getCookieArray(name){
	var i=0;
	while (getCookie(name + i) != null) {
		this[i + 1] = getCookie(name + i);
		i++; this.length = i; 
	}
}