////////////////////////////////////////////////////////////////////////////
// db Masters' Links Directory 3.5, Copyright (c) 2003 dB Masters Multimedia
// Content Manager comes with ABSOLUTELY NO WARRANTY
// Licensed under the AGPL
// See license.txt and readme.txt for details
////////////////////////////////////////////////////////////////////////////

function validate_cat()
{

	if(validate_required(document.getElementById('form').name,"Please enter a name for this category.")==false)
	{
	return false;
	}		

}

function validate_link()
{
	
	if(validate_required(document.getElementById('form').name,"Please enter a name for this link.")==false)
	{
	return false;
	}
	else if(validate_required(document.getElementById('form').dsc,"Please enter a short description of the link.")==false)
	{
	return false;
	}
	else if(validate_required(document.getElementById('form').url,"Please enter the URL of the link.")==false)
	{
	return false;
	}
	else if(validate_required(document.getElementById('form').email,"Please enter an email address.")==false)
	{
	return false;
	}
	
}

function validate_add()
{

	if(validate_required(document.getElementById('form').name,"Please enter a name for the link.")==false)
	{
	return false;
	}
	else if(validate_required(document.getElementById('form').dsc,"Please enter a short description of the link.")==false)
	{
	return false;
	}	
	else if(validate_required(document.getElementById('form').url,"Please enter the URL of the link.")==false)
	{
	return false;
	}
	else if(validate_email(document.getElementById('form').email,"Please enter a valid email address.")==false)
	{
	return false;
	}
	else if(validate_required(document.getElementById('form').password,"Please enter a password.")==false)
	{
	return false;
	}
	
}

function validate_edit()
{

	if(validate_required(document.getElementById('form').name,"Please enter a name for the link.")==false)
	{
	return false;
	}
	else if(validate_required(document.getElementById('form').dsc,"Please enter a short description of the link.")==false)
	{
	return false;
	}
	else if(validate_required(document.getElementById('form').url,"Please enter the URL of the link.")==false)
	{
	return false;
	}
	else if(validate_required(document.getElementById('form').email,"Please enter an email address.")==false)
	{
	return false;
	}
	else if(validate_required(document.getElementById('form').password,"Please enter a password.")==false)
	{
	return false;
	}
	
}

function validate_login()
{
	
	if(validate_required(document.getElementById('form').url,"Please enter the URL of the link you wish to edit.")==false)
	{
	return false;
	}
	else if(validate_required(document.getElementById('form').email,"Please enter the email address you registered the link with.")==false)
	{
	return false;
	}
	else if(validate_required(document.getElementById('form').password,"Please enter the password you registered the link with.")==false)
	{
	return false;
	}
	
}

function validate_admin()
{
	if(validate_required(document.getElementById('form').pw,"Please enter a password.")==false)
	{
	return false;
	}
}

function validate_remind()
{
	if(validate_required(document.getElementById('form').email,"Please enter your email address.")==false)
	{
	return false;
	}
}

function blocking(nr)
{
	if (document.getElementById)
	{
		current=(document.getElementById(nr).style.display=='none')?'block':'none';
		document.getElementById(nr).style.display=current;
	}
}

function validate_required(field,alerttxt)
{

with (field)

  {

  if (value==null||value=="")
	{
		if (!alerttxt=="")
		{
		alert(alerttxt);
		style.background = "yellow";
		focus();
		}
	return false;
	}
  else
	{
	return true;
	}
  }
}

function check_numeric(field,alerttxt)
{
with (field)
  {
  if (value==null||IsNumeric(value) == false) 
	{
	alert(alerttxt);return false;
	}
  else
	{
	return true;
	}
  }
}

function IsNumeric(strString)

   //  check for valid numeric strings	
   {

   var strValidChars = "0123456789.-";
   var strChar;
   var blnResult = true;

   if (strString.length == 0) return false;

   //  test strString consists of valid characters listed above
   for (i = 0; i < strString.length && blnResult == true; i++)
      {
      strChar = strString.charAt(i);
      if (strValidChars.indexOf(strChar) == -1)
         {
         blnResult = false;
         }
      }
   return blnResult;
}

function validate_email(field,alerttxt)
{
with (field)

  {
  
  apos=value.indexOf("@");
  dotpos=value.lastIndexOf(".");
  
  if (apos<1||dotpos-apos<2)
	{
	alert(alerttxt);
	style.background = "yellow";
	focus();
	return false;
	}
  
  else {return true;}
  
  }
}
//----------------------------------------