文本加密　自定义加密code 　只可加密英文

加入如下代码到head区域
<SCRIPT language=JavaScript> <!-- Begin var TID = 0; var longer = 0; var thirdwrite = ""; var alphabet = new Array("0@","1#","2$","3%","4^","5&","6*","7 = ","8-","9+","Aa","Bb","Cc","Dd","Ee","Ff","Gg","Hh","Ii","Jj","Kk","Ll","Mm","Nn","Oo","Pp","Qq","Rr","Ss","Tt","Uu","Vv","Ww","Xx","Yy","Zz"); function preTime(coco, uinput, question) { longer = coco.length - 1; placement = 0; ref = 0 ; secondWrite = ""; firstWrite = ""; thirdWrite = ""; code1(coco, uinput, longer, question); } function findshift(letter) { for (i = 0; i < 36; i++) { if ((alphabet[i].substring(0,1) == letter) || (alphabet[i].substring(1,2) == letter)) { if (alphabet[i].substring(0,1) == letter) { x = 0; } if (alphabet[i].substring(1,2) == letter) { x = 1; } return i; } } } function check(letter) { bill = "no"; for (i = 0; i < 36; i++) { if ((alphabet[i].substring(0,1) == letter) || (alphabet[i].substring(1,2) == letter)) { bill = "yes"; } } if (bill == "yes") { return true; } else { return false; } } function fixoffset(takin) { if (takin > 35) { return (takin - 36); } else { return takin; } } function code1(inval1,inval2,inval3,sage) { if (check(inval2.charAt(placement))) { if (check(inval1.charAt(ref))) { if (sage == 0) { shift = findshift(inval1.charAt(ref)); } if (sage == 1) { shift = 36 - findshift(inval1.charAt(ref)); } } else { shift = 0; } orig = findshift(inval2.charAt(placement)); firstWrite = firstWrite+alphabet[fixoffset(orig+shift)].charAt(x); } else { firstWrite = firstWrite+inval2.charAt(placement); } secondWrite = inval2.substring(placement+1,inval2.length+1); thirdWrite = firstWrite+secondWrite; document.inputo.written.value = thirdWrite; placement++; if (ref == inval3) { ref = 0 } else { ref++; } if (placement == (inval2.length)) { window.clearTimeout(TID); return false; } one = inval1; two = inval2; three = inval3; goer = sage; TID = window.setTimeout("code1(one, two, three, goer)", 0); } // End --> </SCRIPT>

加入如下代码到body区域
<FORM name=inputo><TEXTAREA name=written rows=12 cols=40>Typhoon Start JavaScript Fairyland</TEXTAREA> <BR>自定加密Code: <INPUT value=typhoon name=codeWord> <INPUT onclick="preTime(codeWord.value,written.value, 0);" type=button value=加密> <INPUT onclick="preTime(codeWord.value,written.value, 1);" type=button value=解密> </FORM>