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麻烦高手们看看这个页面的函数是什么意思。完全不懂,麻烦详解 <SCRIPT LANGUAGE="JavaScript"> helpstat = false; stprompt = true; basic = false; function thelp(swtch){      if (swtch == 1){          basic = false;          stprompt = false;          helpstat = true;      } else if (swtch == 0) {          helpstat = false;          stprompt = false;          basic = true;      } else if (swtch == 2) {          helpstat = false;          basic = false;          stprompt = true;      } } function AddText(NewCode) { document.myform.txtcontent.value+=NewCode } function email() {      if (helpstat) {          alert("Email 标记\n插入 Email 超级链接\n用法1: [email][email protected][/email]\n用法2: [[email protected]]沙滩小子[/email]");      } else if (basic) {          AddTxt="[email][/email]";          AddText(AddTxt);      } else {          txt2=prompt("链接显示的文字.\n如果为空,那么将只显示你的 Email 地址","");          if (txt2!=null) {              txt=prompt("Email 地址.","[email protected]");                    if (txt!=null) {                  if (txt2=="") {                      AddTxt="[email]"+txt+"[/email]";                  } else {                      AddTxt="[email="+txt+"]"+txt2;                      AddText(AddTxt);                      AddTxt="[/email]";                  }                  AddText(AddTxt);                          }
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