function check_email ( j_email ){	
if ( j_email.indexOf("@") < 1 
  || j_email.indexOf("@") == j_email.length-1     
  || j_email.indexOf("@") != j_email.lastIndexOf("@")
  || j_email.indexOf("*") != -1 
  || j_email.indexOf("+") != -1
  || j_email.indexOf("/") != -1 
  || j_email.indexOf("..") != -1
  || j_email.indexOf("@.") != -1 
  || j_email.charAt(0) != escape(j_email.charAt(0))
  || j_email.charAt(0) == "-"
  || j_email.charAt(0) == "_"
  || j_email.charAt(0) == "."
  || j_email.charAt(j_email.length-1) == "."
  || j_email.substring(j_email.indexOf("@"),j_email.length).indexOf(".") == -1 ) return 1;
  for ( var i=0; i<j_email.length; i++ ){
    if ( j_email.charAt(i) != escape(j_email.charAt(i)) 
      && j_email.charAt(i) != "@" )  return 1;
  }
return "";
}