// MD5 Encode
var hexcase=0
var b64pad=""
var chrsz=8
function hex_md5(s){return binl2hex(core_md5(str2binl(s),s.length*chrsz));}
function b64_md5(s){return binl2b64(core_md5(str2binl(s),s.length*chrsz));}
function str_md5(s){return binl2str(core_md5(str2binl(s),s.length*chrsz));}
function hex_hmac_md5(key,data){return binl2hex(core_hmac_md5(key,data));}
function b64_hmac_md5(key,data){return binl2b64(core_hmac_md5(key,data));}
function str_hmac_md5(key,data){return binl2str(core_hmac_md5(key,data));}
function md5_vm_test(){
return hex_md5("abc")=="900150983cd24fb0d6963f7d28e17f72"}
function core_md5(x,len){
x[len>>5] |=0x80<<((len)% 32)
x[(((len+64)>>>9)<<4)+14]=len
var a=1732584193
var b=-271733879
var c=-1732584194
var d=271733878
for(var i=0;i<x.length;i+=16){
var olda=a
var oldb=b
var oldc=c
var oldd=d
a=md5_ff(a,b,c,d,x[i+0],7,-680876936)
d=md5_ff(d,a,b,c,x[i+1],12,-389564586)
c=md5_ff(c,d,a,b,x[i+2],17,606105819)
b=md5_ff(b,c,d,a,x[i+3],22,-1044525330)
a=md5_ff(a,b,c,d,x[i+4],7,-176418897)
d=md5_ff(d,a,b,c,x[i+5],12,1200080426)
c=md5_ff(c,d,a,b,x[i+6],17,-1473231341)
b=md5_ff(b,c,d,a,x[i+7],22,-45705983)
a=md5_ff(a,b,c,d,x[i+8],7,1770035416)
d=md5_ff(d,a,b,c,x[i+9],12,-1958414417)
c=md5_ff(c,d,a,b,x[i+10],17,-42063)
b=md5_ff(b,c,d,a,x[i+11],22,-1990404162)
a=md5_ff(a,b,c,d,x[i+12],7,1804603682)
d=md5_ff(d,a,b,c,x[i+13],12,-40341101)
c=md5_ff(c,d,a,b,x[i+14],17,-1502002290)
b=md5_ff(b,c,d,a,x[i+15],22,1236535329)
a=md5_gg(a,b,c,d,x[i+1],5,-165796510)
d=md5_gg(d,a,b,c,x[i+6],9,-1069501632)
c=md5_gg(c,d,a,b,x[i+11],14,643717713)
b=md5_gg(b,c,d,a,x[i+0],20,-373897302)
a=md5_gg(a,b,c,d,x[i+5],5,-701558691)
d=md5_gg(d,a,b,c,x[i+10],9,38016083)
c=md5_gg(c,d,a,b,x[i+15],14,-660478335)
b=md5_gg(b,c,d,a,x[i+4],20,-405537848)
a=md5_gg(a,b,c,d,x[i+9],5,568446438)
d=md5_gg(d,a,b,c,x[i+14],9,-1019803690)
c=md5_gg(c,d,a,b,x[i+3],14,-187363961)
b=md5_gg(b,c,d,a,x[i+8],20,1163531501)
a=md5_gg(a,b,c,d,x[i+13],5,-1444681467)
d=md5_gg(d,a,b,c,x[i+2],9,-51403784)
c=md5_gg(c,d,a,b,x[i+7],14,1735328473)
b=md5_gg(b,c,d,a,x[i+12],20,-1926607734)
a=md5_hh(a,b,c,d,x[i+5],4,-378558)
d=md5_hh(d,a,b,c,x[i+8],11,-2022574463)
c=md5_hh(c,d,a,b,x[i+11],16,1839030562)
b=md5_hh(b,c,d,a,x[i+14],23,-35309556)
a=md5_hh(a,b,c,d,x[i+1],4,-1530992060)
d=md5_hh(d,a,b,c,x[i+4],11,1272893353)
c=md5_hh(c,d,a,b,x[i+7],16,-155497632)
b=md5_hh(b,c,d,a,x[i+10],23,-1094730640)
a=md5_hh(a,b,c,d,x[i+13],4,681279174)
d=md5_hh(d,a,b,c,x[i+0],11,-358537222)
c=md5_hh(c,d,a,b,x[i+3],16,-722521979)
b=md5_hh(b,c,d,a,x[i+6],23,76029189)
a=md5_hh(a,b,c,d,x[i+9],4,-640364487)
d=md5_hh(d,a,b,c,x[i+12],11,-421815835)
c=md5_hh(c,d,a,b,x[i+15],16,530742520)
b=md5_hh(b,c,d,a,x[i+2],23,-995338651)
a=md5_ii(a,b,c,d,x[i+0],6,-198630844)
d=md5_ii(d,a,b,c,x[i+7],10,1126891415)
c=md5_ii(c,d,a,b,x[i+14],15,-1416354905)
b=md5_ii(b,c,d,a,x[i+5],21,-57434055)
a=md5_ii(a,b,c,d,x[i+12],6,1700485571)
d=md5_ii(d,a,b,c,x[i+3],10,-1894986606)
c=md5_ii(c,d,a,b,x[i+10],15,-1051523)
b=md5_ii(b,c,d,a,x[i+1],21,-2054922799)
a=md5_ii(a,b,c,d,x[i+8],6,1873313359)
d=md5_ii(d,a,b,c,x[i+15],10,-30611744)
c=md5_ii(c,d,a,b,x[i+6],15,-1560198380)
b=md5_ii(b,c,d,a,x[i+13],21,1309151649)
a=md5_ii(a,b,c,d,x[i+4],6,-145523070)
d=md5_ii(d,a,b,c,x[i+11],10,-1120210379)
c=md5_ii(c,d,a,b,x[i+2],15,718787259)
b=md5_ii(b,c,d,a,x[i+9],21,-343485551)
a=safe_add(a,olda)
b=safe_add(b,oldb)
c=safe_add(c,oldc)
d=safe_add(d,oldd)}
return Array(a,b,c,d)}
function md5_cmn(q,a,b,x,s,t){
return safe_add(bit_rol(safe_add(safe_add(a,q),safe_add(x,t)),s),b)}
function md5_ff(a,b,c,d,x,s,t){
return md5_cmn((b&c)|((~b)&d),a,b,x,s,t)}
function md5_gg(a,b,c,d,x,s,t){
return md5_cmn((b&d)|(c&(~d)),a,b,x,s,t)}
function md5_hh(a,b,c,d,x,s,t){
return md5_cmn(b ^ c ^ d,a,b,x,s,t)}
function md5_ii(a,b,c,d,x,s,t){
return md5_cmn(c ^(b |(~d)),a,b,x,s,t)}
function core_hmac_md5(key,data){
var bkey=str2binl(key)
if(bkey.length>16)bkey=core_md5(bkey,key.length*chrsz)
var ipad=Array(16),opad=Array(16)
for(var i=0;i<16;i++){
ipad[i]=bkey[i] ^ 0x36363636
opad[i]=bkey[i] ^ 0x5C5C5C5C}
var hash=core_md5(ipad.concat(str2binl(data)),512+data.length*chrsz)
return core_md5(opad.concat(hash),512+128)}
function safe_add(x,y){
var lsw=(x&0xFFFF)+(y&0xFFFF)
var msw=(x>>16)+(y>>16)+(lsw>>16)
return(msw<<16)|(lsw&0xFFFF)}
function bit_rol(num,cnt){return(num<<cnt)|(num>>>(32-cnt))}
function str2binl(str){
var bin=Array()
var mask=(1<<chrsz)-1
for(var i=0;i<str.length*chrsz;i+=chrsz)
bin[i>>5] |=(str.charCodeAt(i/chrsz)&mask)<<(i%32)
return bin}
function binl2str(bin){
var str=""
var mask=(1<<chrsz)-1
for(var i=0;i<bin.length*32;i+=chrsz)
str+=String.fromCharCode((bin[i>>5]>>>(i % 32))&mask)
return str}
function binl2hex(binarray){
var hex_tab=hexcase ? "0123456789ABCDEF" : "0123456789abcdef"
var str=""
for(var i=0;i<binarray.length*4;i++){
str+=hex_tab.charAt((binarray[i>>2]>>((i%4)*8+4))&0xF)+
hex_tab.charAt((binarray[i>>2]>>((i%4)*8))&0xF)}
return str}
function binl2b64(binarray){
var tab="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
var str=""
for(var i=0;i<binarray.length*4;i+=3){
var triplet=(((binarray[i>>2]>>8*(i %4))&0xFF)<<16)
|(((binarray[i+1>>2]>>8*((i+1)%4))&0xFF)<<8)
|((binarray[i+2>>2]>>8*((i+2)%4))&0xFF)
for(var j=0;j<4;j++){
if(i*8+j*6>binarray.length*32)str+=b64pad
else str+=tab.charAt((triplet>>6*(3-j))&0x3F)}}
return str}

function prevGrav() {
	var newEmail = document.getElementById("email").value;
	var prevElement = document.getElementById("grav-prev").firstChild.firstChild;
	var md5 = hex_md5(newEmail);
	prevElement.src = "http://www.gravatar.com/avatar.php?gravatar_id="+md5+"&amp;rating=PG&amp;size=70&amp;default=http%3A%2F%2Fsamrayner.com%2Fthemes%2Fsite_themes%2Fsamrayner%2Fimages%2Fgetagrav.gif";
}