function tve_hash(str1, str2) {
	if (!str1 || str1=="") {
		alert("tve_hash error: str1 empty");
		return false;
	}
	if (!str2 || str2=="") {
		alert("tve_hash error: str2 empty");
		return false;
	}
	var asc1;
	var asc2;
	var add;
	var hash;
	var scr;
	asc1=str2asc(str1, false);
	asc2=str2asc(str2, true);
	asc1=pad150(asc1);
	asc2=pad150(asc2);
	asc1=scramble(asc1);
	asc2=scramble(asc2);
	add=longadd(asc1,asc2);
	scr=scramble(add);
	hash=basedense(scr);
	hash=hash.substr(0,64);
	return hash;
}
function str2asc(str, flip) {
	var asc = new Array();
	for (var i=0; i<str.length; i++) {
		asc[asc.length]=str.charCodeAt(i);
	}
	if (flip) asc=asc.reverse();
	return asc.join("");
}
function pad150(asc) {
	do {
		asc+=asc;
	} while (asc.length<150);
	asc=asc.substr(0,150);
	return asc;
}
function longadd(asc1,asc2) {
	var add='';
	var carry=0;
	for (var i=0; i<asc1.length; i++) {
		num=parseInt(asc1.substr(i,1))+parseInt(asc2.substr(i,1))+carry;
		num=num.toString();
		if (num.length==2) {
			carry=1;
			add+=num.substr(1,1);
		}else{
			carry=0;
			add+=num;	
		}
	}
	return add;
}
function scramble(add) {
	var scr = '';
	var carry = 0;
	num=add.substr(add.length-1, 1);
	for (var i=0; i<add.length; i++) {
		num=parseInt(add.substr(i,1))+parseInt(num)+parseInt(carry);
		num=num.toString();
		if (num.length==2) {
			carry=num.substr(0, 1);
			num=num.substr(1, 1);
		}else{
			carry=0;
		}
		scr+=num;
	}
	return scr;
}
function basedense(add) {
	var bits='';
	var hash='';
	do {
		do {
			switch (add.substr(0,1)) {
				case '0': bits+='0000'; break;
				case '1': bits+='0001'; break;
				case '2': bits+='0010'; break;
				case '3': bits+='0011'; break;
				case '4': bits+='0100'; break;
				case '5': bits+='0101'; break;
				case '6': bits+='0110'; break;
				case '7': bits+='0111'; break;
				case '8': bits+='1000'; break;
				case '9': bits+='1001'; break;
			}
			add=add.substring(1,add.length);
		} while (bits.length < 6 && add.length!=0);
		if (bits.length >= 6) {
			hash+=base64[bits.substring(0,6)];
			bits=bits.substring(6,bits.length);
		}
	} while (add.length!=0);
	return hash;
}

var base64 = new Array();
base64["000000"]='0';
base64["000001"]='1';
base64["000010"]='2';
base64["000011"]='3';
base64["000100"]='4';
base64["000101"]='5';
base64["000110"]='6';
base64["000111"]='7';
base64["001000"]='8';
base64["001001"]='9';
base64["001010"]='a';
base64["001011"]='b';
base64["001100"]='c';
base64["001101"]='d';
base64["001110"]='e';
base64["001111"]='f';
base64["010000"]='0';
base64["010001"]='g';
base64["010010"]='h';
base64["010011"]='i';
base64["010100"]='j';
base64["010101"]='k';
base64["010110"]='l';
base64["010111"]='m';
base64["011000"]='n';
base64["011001"]='o';
base64["011010"]='p';
base64["011011"]='q';
base64["011100"]='r';
base64["011101"]='s';
base64["011110"]='t';
base64["011111"]='u';
base64["100000"]='v';
base64["100001"]='w';
base64["100010"]='x';
base64["100011"]='y';
base64["100100"]='z';
base64["100101"]='A';
base64["100110"]='B';
base64["100111"]='C';
base64["101000"]='D';
base64["101001"]='E';
base64["101010"]='F';
base64["101011"]='G';
base64["101100"]='H';
base64["101101"]='I';
base64["101110"]='J';
base64["101111"]='K';
base64["110000"]='L';
base64["110001"]='M';
base64["110010"]='N';
base64["110011"]='O';
base64["110100"]='P';
base64["110101"]='Q';
base64["110110"]='R';
base64["110111"]='S';
base64["111000"]='T';
base64["111001"]='U';
base64["111010"]='V';
base64["111011"]='W';
base64["111100"]='X';
base64["111101"]='Y';
base64["111110"]='Z';
base64["111111"]='a';