// JavaScript Document
//---formvalidations.js
//---takes care of most form validations...

//check the text value//
function checkitem(item, fdesc) { 
	var errorstr = "";
	if (item.value == "" || checkblanks(item.value) == true)  {
   		if (fdesc != "") { 
   			errorstr = "'" + fdesc + "' is required.\n";
		}
   }
   return errorstr;
 }

// following looks for all blanks in a string - typical of checking//
function checkblanks(item)  {
  var isblank = true;
  for (i = 0; i < item.length; i++) {
    if (item.charAt(i) != " ") {
      isblank = false;  }
  } 
  return isblank;
}

// check for valid emails....
function checkemail(item) {
  var goodmail = true;
  var addr = item.value;
  var invchar = " /:,;";
  var errorstr = "";
  var illegalChars= /[\(\)\<\>\,\;\:\\\"\[\]]/
  var emailFilter=/^.+@.+\..{2,3}$/;
  for (i=0; i<invchar.length; i++)  {
	badchar = invchar.charAt(i);
	if (addr.indexOf(badchar,0) > -1)  {
   		goodmail = false;
	}
  }
  atpos = addr.indexOf("@",1);
  if (atpos == -1) {
	goodmail = false;
  }
  else  {
	perpos = addr.indexOf(".",atpos);
	if (perpos == -1)  {
		goodmail = false;
	} else if (perpos + 3 > addr.length)  {
		goodmail = false;
	} else if (addr.match(illegalChars)) {
		goodmail = false;
	} else if (!(emailFilter.test(addr))) { 
		goodmail = false;
    }
  }
  if (goodmail == false) {
    errorstr = "Email address is not valid.\n";
  }
  return errorstr;
}