// JavaScript Document

function checkform()
{
var alertStr = checkname(document.req_form.name.value);
alertStr += checkcell(document.req_form.cell.value);
alertStr += checkmail(document.req_form.email.value);
if( alertStr != '' ) 
{
  alert(alertStr);
  return false;
}
return true;

}


function checkCISform()
{
var alertStr = checkname(document.CIS_req_form.name.value);
alertStr += checkcell(document.CIS_req_form.cell.value);
alertStr += checkmail(document.CIS_req_form.email.value);
if( alertStr != '' ) 
{
  alert(alertStr);
  return false;
}
return true;

}
function checkname(namecontent)
{
str = "";
var namelength=namecontent.length;
if (namelength==0) str = "姓名请务必填写!\n";
return str;
}

function checkcell(namecontent)
{
str = "";
var namelength=namecontent.length;
if (namelength==0) str = "行动电话号码请务必填写!(或您可填[无]代表不使用行动电话)\n";
return str;
}
function checkmail(emailcontent)
{
str = "";
var atpos=emailcontent.indexOf("@",2);
var dotpos=emailcontent.indexOf(".",atpos+2);
var dotpos2=emailcontent.lastIndexOf(".");
var emaillength=emailcontent.length;
var lastdoppos=emaillength-dotpos2;
if(emaillength<=5 || atpos<=0 || dotpos<=0 || lastdoppos<3)
{
  str = "E-mail格式不正确!!!\n";
}
else
{
  for(var i = 0; i < emailcontent.length; i++) 
  {
   var c = emailcontent.charAt(i);
   if(!((c >= "A" && c <= "Z")||(c >= "a" && c <= "z")||(c >= "0" && c <= "9")||(c == "_")||(c == "@")||(c == ".")||(c == "-"))) 
   {
     str = "E-mail格式不正确!!!\n";

   }
  }
}
return str;
}