function numOnly(e)
{
    var key;
  
    if(window.event) 
    {
      key = window.event.keyCode; 
    }
    else if(e.which) 
    {
      key = e.which;
    }
    
    if(key > 31 && (key < 48 || key > 57))
	{
		alert("Number only!")
		return false;
	}

	return true;
}

function floatNumOnly(e)
{
    var key;
  
    if(window.event) 
    {
      key = window.event.keyCode; 
    }
    else if(e.which) 
    {
      key = e.which;
    }
    
   if((key > 31 && (key < 48 || key > 57)) && key != 46)
	{
		alert("Number only!")
		return false;
	}

	return true;
}

function checkMailAddrress(fieldObj)
{
  var addrList = new Array();
  
  if(fieldObj.indexOf(",") > 0)
    addrList = fieldObj.split(",");
  else if(fieldObj.indexOf(";") > 0)
    addrList = fieldObj.split(";");
  else if(fieldObj.indexOf(" ") > 0)
    addrList = fieldObj.split(" ");
  else
    addrList[0] = fieldObj;
   
  if(addrList.length > 0)
  {
    for(var i = 0; i < addrList.length; i++)
    { 
      if(BadEmailStr(addrList[i], addrList[i]))
        return false;
    }
  }
  
  return true;
  
}

	function checkEmail(fieldObj, fieldName)
	{
	  if(trim(fieldObj.value) == "")
	    return;
	    
	  var fieldLabel = "Email";
	  if(fieldName)
	  	 fieldLabel = fieldLabel + " " + fieldName;
  
	//  BadEmail(fieldObj, "Email");
		var isBad = evaluateEmails(fieldObj.value, fieldLabel);
		
			if(isBad)
	 		{
		 		fieldObj.focus();
		 		return false;
	 		}
	}
 	
  function trim(str)
  {
  	return str.replace(/^\s*/, "").replace(/\s*$/, "");
	}

 	function evaluateEmails(emails, objName)
 	{

 		var isBad = false;
 		var mailList = emails.split(",");

 		for(var i = 0; i < mailList.length; i++)
 		{
 			isBad = BadEmailStr(mailList[i], objName);
 			
 			if(isBad)
 				break;
 		}
  	
 		return isBad;
 	}

// trim a text object
function trimObject(textObject)
{
  textObject.value = trim(textObject.value);
}

function BadEmail(obj, objname)
{
     trimObject(obj);
     x=obj
     L =x.value.length;

     if (x.value.charAt(L-1)==".")
     {
	alert("'" + objname + "' may not have a period as it last character");
	x.focus();
	return true
     }

     At=x.value.indexOf("@");

     if (At==-1)
     {
	alert("'" + objname + "' is missing an @ sign");
	x.focus();
	return true
     }

     if (At==0)
     {
	alert("'" + objname + "' may not have @-sign as first character");
	x.focus();
	return true
     }

     if (At==(L-1))
     {
	alert("'" + objname + "' may not have @-sign as last character");
	x.focus();
	return true
     }

     A=x.value.indexOf("@",At+1);	 

     if (A !=-1)
     {
	alert("'" + objname + "' may not have more than one @-sign");
	x.focus();
	return true
     }

     P =x.value.indexOf(".");

     if (P==-1)
     {
	alert("'" + objname + "' must have at least one period");
	x.focus();
	return true
     }

     if (P==0)
     {
 	alert("'" + objname + "' may not have period as first character");
	x.focus();
	return true
     }

     P =x.value.indexOf(".",At+1);

     if (P==-1)
     {
	alert("'" + objname + "' must have at least one period after @-sign");
	x.focus();
	return true
     }

     if (At+1==P)
     {
	alert("'" + objname + "' must have characters between @sign and period");
	x.focus();
	return true
     }

     y=x.value.substring(L-3,L); // last three characters
     z=x.value.substring(L-2,L); // last two characters
     z=z.toLowerCase();

     if (y.charAt(0)=="." && z=="us") 
     {
	y=x.value.substring(L-6,L-3)
     }

/*
     if (y.charAt(0)!=".")
     {
    	 y=y.toLowerCase();

	 if (y!="com" && y!="edu" && y!="net" && y!="org" && y!="gov" && y!="mil" && y!="int")
	 {
	   alert("'" + objname + "' must be .com, .edu, .net, .org, .gov, .mil, or .int ");
	   x.focus();
	   return true
         }
     }

     if (P==(L-3))
     {
	alert("'" + objname + "' may not have only one period and end in just two letters");
	x.focus();
	return true
     }
*/
     if (x.value.indexOf(",")!=-1)
     {
	alert("'" + objname + "' may not contain a comma");
	x.focus();
	return true
     }

     if (x.value.indexOf(" ")!=-1)
     {
	alert("'" + objname + "' may not contain a space");
	x.focus();
	return true
     }

     if (x.value.indexOf("*")!=-1)
     {
	alert("'" + objname + "' may not contain a asterisk");
	x.focus();
	return true
     }

     if (x.value.indexOf(")")!=-1)
     {
	alert("'" + objname + "' may not contain a close parenthesis");
	x.focus();
	return true
     }

     if (x.value.indexOf("(")!=-1)
     {
	alert("'" + objname + "' may not contain a open parenthesis");
        x.focus();
	return true
     }

     if (x.value.indexOf(">")!=-1)
     {
	alert("'" + objname + "' may not contain a greater than sign");
	x.focus();
	return true
     }

     if (x.value.indexOf("<")!=-1)
     {
	alert("'" + objname + "' may not contain a less than sign");
	x.focus();
	return true
     }

     if (x.value.indexOf(":")!=-1)
     {
	alert("'" + objname + "' may not contain a colon");
	x.focus();
	return true
     }

     if (x.value.indexOf(";")!=-1)
     {
	alert("'" + objname + "' may not contain a semi-colon");
	x.focus();
	return true
     }

     if (x.value.indexOf('"')!=-1)
     {
	alert("'" + objname + "' may not contain a quotation mark");
	x.focus();
	return true
     }
	 
     return false;
}

function BadEmailStr(obj, objname)
{
     x = trim(obj);
     L =x.length;

     if (x.charAt(L-1)==".")
     {
			alert("'" + objname + "' may not have a period as it last character");
			return true
     }

     At=x.indexOf("@");

     if (At==-1)
     {
			alert("'" + objname + "' is missing an @ sign");
			return true
     }

     if (At==0)
     {
			alert("'" + objname + "' may not have @-sign as first character");
			return true
     }

     if (At==(L-1))
     {
			alert("'" + objname + "' may not have @-sign as last character");
			return true
     }

     A=x.indexOf("@",At+1);	 

     if (A !=-1)
     {
			alert("'" + objname + "' may not have more than one @-sign");
			return true
     }

     P =x.indexOf(".");

     if (P==-1)
     {
			alert("'" + objname + "' must have at least one period");
			return true
     }

     if (P==0)
     {
		 	alert("'" + objname + "' may not have period as first character");
			return true
     }

     P =x.indexOf(".",At+1);

     if (P==-1)
     {
			alert("'" + objname + "' must have at least one period after @-sign");
			return true
     }

     if (At+1==P)
     {
			alert("'" + objname + "' must have characters between @sign and period");
			return true
     }

     y=x.substring(L-3,L); // last three characters
     z=x.substring(L-2,L); // last two characters
     z=z.toLowerCase();

     if (y.charAt(0)=="." && z=="us") 
     {
			y=x.substring(L-6,L-3)
     }

/*
     if (y.charAt(0)!=".")
     {
    	 y=y.toLowerCase();

	 if (y!="com" && y!="edu" && y!="net" && y!="org" && y!="gov" && y!="mil" && y!="int")
	 {
	   alert("'" + objname + "' must be .com, .edu, .net, .org, .gov, .mil, or .int ");
	   x.focus();
	   return true
         }
     }

     if (P==(L-3))
     {
	alert("'" + objname + "' may not have only one period and end in just two letters");
	x.focus();
	return true
     }
*/
     if (x.indexOf(",")!=-1)
     {
			alert("'" + objname + "' may not contain a comma");
			return true
     }

     if (x.indexOf(" ")!=-1)
     {
			alert("'" + objname + "' may not contain a space");
			return true
     }

     if (x.indexOf("*")!=-1)
     {
			alert("'" + objname + "' may not contain a asterisk");
			return true
     }

     if (x.indexOf(")")!=-1)
     {
			alert("'" + objname + "' may not contain a close parenthesis");
			return true
     }

     if (x.indexOf("(")!=-1)
     {
			alert("'" + objname + "' may not contain a open parenthesis");
			return true
     }

     if (x.indexOf(">")!=-1)
     {
			alert("'" + objname + "' may not contain a greater than sign");
			return true
     }

     if (x.indexOf("<")!=-1)
     {
			alert("'" + objname + "' may not contain a less than sign");
			return true
     }

     if (x.indexOf(":")!=-1)
     {
			alert("'" + objname + "' may not contain a colon");
			return true
     }

     if (x.indexOf(";")!=-1)
     {
			alert("'" + objname + "' may not contain a semi-colon");
			return true
     }

     if (x.indexOf('"')!=-1)
     {
			alert("'" + objname + "' may not contain a quotation mark");
			return true
     }
	 
     return false;
}

//---------------------------------------------------------------------
//
//   validate date input field
//
//---------------------------------------------------------------------->

function checkDate(fldTextObj)
{
   // format check: mm/dd/yyyy
   var pattern = /^\d{1,2}\/\d{1,2}\/\d{4}$/;
   var userInput = fldTextObj.value;

   if(!pattern.test(userInput))
   {
     alert("Invalidate Date: " + fldTextObj.value + ". Please use MM/DD/YYYY.");
     fldTextObj.focus();
     return false;
   }
   
   // date check
   if(!validateDate(fldTextObj))
   {
     fldTextObj.focus();
     alert("Invalidate Date: " + fldTextObj.value + ".");
     return false;
   }

   return true;
}

function validateDate(fldText)
{
  var userInput = fldText.value;
  return validateDateText(userInput);
}

function validateDateText(fldText)
{
   var userInput = fldText;

   // split date string by "/"
   var dateArray = new Array();
   dateArray = userInput.split("/");

   // check month
   if ((dateArray[0] < 1) || (dateArray[0] > 12)) 
   {
      return false;
   }


   // check year:  yy or yyyy
   if(dateArray[2].length == 3)
      return false;

   // check days
   if(dateArray[1] < 1)
     return false;

   // 30 days hath september, april, june, and november...
   if (dateArray[0] == 4 || dateArray[0] == 6 || dateArray[0] == 9 || dateArray[0] == 11) 
      if (dateArray[1] > 30) 
         return false;
      
   // all the rest (jan, mar, may, jul, aug, oct, dec) have 31 except for feb
   if ((dateArray[0] == 1) || (dateArray[0] == 3) ||  (dateArray[0] == 5) ||  (dateArray[0] == 7) ||
       (dateArray[0] == 8) || (dateArray[0] == 10) || (dateArray[0] == 12)) 
      if (dateArray[1] > 31) 
         return false;
 
   // feb - deal with leap year
   if(dateArray[0] == 2)
   {
     var leapyear = 0;
     var TheYear = dateArray[2];
 
     // user input yy = 00
     if(TheYear == 0)
	TheYear = 2000;

     // user input two digits
     if(TheYear < 100)
       TheYear = TheYear + 1900;
     
     // is a leap year?
     if (TheYear % 4 == 0) 
     {
       leapyear = 1;

       if (TheYear % 100 == 0) 
       {
         leapyear = 0;

         if (TheYear % 400 == 0)
            leapyear = 1;
       }
     }

     if (dateArray[1] > (28 + leapyear)) 
       return false;
   }
   
   return true;
}