optimizations; added sha1_string() and changed sha1() to expect an array of bytes;

sha1.html

@@ -10,7 +10,7 @@
 			{
 				sha1_profile();
 				if ( sha1_verify() )
-					document.getElementById('result').innerHTML = sha1("abcde");
+					document.getElementById('result').innerHTML = sha1_string("abcde");
 				else
 					document.getElementById('result').innerHTML = "Error!!!";
 			}