function utf8t2d(t)
		{
		t = t.replace(/\r\n/g,"\n");
		var d=new Array; var test=String.fromCharCode(237);
		if (test.charCodeAt(0) < 0) 
			for(var n=0; n<t.length; n++)
				{
				var c=t.charCodeAt(n);
				if (c>0)
					d[d.length]= c;
				else {
					d[d.length]= (((256+c)>>6)|192);
					d[d.length]= (((256+c)&63)|128);}
				}
		else
			for(var n=0; n<t.length; n++)
				{
				var c=t.charCodeAt(n);
				// all the signs of asci => 1byte
				if (c<128)
					d[d.length]= c;
				// all the signs between 127 and 2047 => 2byte
				else if((c>127) && (c<2048)) {
					d[d.length]= ((c>>6)|192);
					d[d.length]= ((c&63)|128);}
				// all the signs between 2048 and 66536 => 3byte
				else {
					d[d.length]= ((c>>12)|224);
					d[d.length]= (((c>>6)&63)|128);
					d[d.length]= ((c&63)|128);}
				}
		return d;
		}
		
function utf8d2t(d)
		{
		var r=new Array; var i=0;
		while(i<d.length)
			{
			if (d[i]<128) {
				r[r.length]= String.fromCharCode(d[i]); i++;}
			else if((d[i]>191) && (d[i]<224)) {
				r[r.length]= String.fromCharCode(((d[i]&31)<<6) | (d[i+1]&63)); i+=2;}
			else {
				r[r.length]= String.fromCharCode(((d[i]&15)<<12) | ((d[i+1]&63)<<6) | (d[i+2]&63)); i+=3;}
			}
		return r.join("");
		}

function b64arrays() {
	var b64s='ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
		b64 = new Array();f64 =new Array();
		for (var i=0; i<b64s.length ;i++) {
			b64[i] = b64s.charAt(i);
			f64[b64s.charAt(i)] = i;
		}
	}

function b64d2t(d) {
		var r=new Array; var i=0; var dl=d.length;
		// this is for the padding
		if ((dl%3) == 1) {
			d[d.length] = 0; d[d.length] = 0;}
		if ((dl%3) == 2)
			d[d.length] = 0;
		// from here conversion
		while (i<d.length)
			{
			r[r.length] = b64[d[i]>>2];
			r[r.length] = b64[((d[i]&3)<<4) | (d[i+1]>>4)];
			r[r.length] = b64[((d[i+1]&15)<<2) | (d[i+2]>>6)];
			r[r.length] = b64[d[i+2]&63];
			if ((i%57)==54)
				r[r.length] = "\n";
			i+=3;
			}
		// this is again for the padding
		if ((dl%3) == 1)
			r[r.length-1] = r[r.length-2] = "=";
		if ((dl%3) == 2)
			r[r.length-1] = "=";
		// we join the array to return a textstring
		var t=r.join("");
		return t;
		}

function b64t2d(t) {
		var d=new Array; var i=0;
		// here we fix this CRLF sequenz created by MS-OS; arrrgh!!!
		t=t.replace(/\n|\r/g,""); t=t.replace(/=/g,"");
		while (i<t.length)
			{
			d[d.length] = (f64[t.charAt(i)]<<2) | (f64[t.charAt(i+1)]>>4);
			d[d.length] = (((f64[t.charAt(i+1)]&15)<<4) | (f64[t.charAt(i+2)]>>2));
		  	d[d.length] = (((f64[t.charAt(i+2)]&3)<<6) | (f64[t.charAt(i+3)]));
		  	i+=4;
			}
		if (t.length%4 == 2)
			d = d.slice(0, d.length-2);
		if (t.length%4 == 3)
			d = d.slice(0, d.length-1);
		return d;
		}

b64arrays();