//Preload Images

preloadImg1= new Image(16,16); 
preloadImg1.src="/images/25-1.gif"; 
preloadImg2= new Image(16,16); 
preloadImg2.src="/images/25-2.gif";
preloadImg3= new Image(9,31); 
preloadImg3.src="/images/db-full-lt.jpg"; 
preloadImg3= new Image(7,31); 
preloadImg3.src="/images/db-full-mid.jpg"; 
preloadImg4= new Image(9,31); 
preloadImg4.src="/images/db-full-rt.jpg"; 
preloadImg5= new Image(9,31); 
preloadImg5.src="/images/db-hf-btm-lt.jpg"; 
preloadImg6= new Image(9,31); 
preloadImg6.src="/images/db-hf-btm-rt.jpg"; 
preloadImg7= new Image(9,31); 
preloadImg7.src="/images/db-hf-top-lt.jpg"; 
preloadImg8= new Image(9,31); 
preloadImg8.src="/images/db-hf-top-rt.jpg"; 
preloadImg9= new Image(9,12); 
preloadImg9.src="/images/db-qt-btm-lt.jpg"; 
preloadImg10= new Image(9,12); 
preloadImg10.src="/images/db-qt-btm-rt.jpg"; 
preloadImg11= new Image(9,12); 
preloadImg11.src="/images/db-qt-mid.jpg"; 
preloadImg12= new Image(9,12); 
preloadImg12.src="/images/db-qt-top-lt.jpg"; 
preloadImg13= new Image(9,12); 
preloadImg13.src="/images/db-qt-top-rt.jpg"; 
preloadImg14= new Image(146,115); 
preloadImg14.src="/images/forecast-content.gif"; 
preloadImg15= new Image(146,21); 
preloadImg15.src="/images/forecast-title.gif"; 
preloadImg16= new Image(9,28); 
preloadImg16.src="/images/lb-full-lt.jpg"; 
preloadImg17= new Image(9,28); 
preloadImg17.src="/images/lb-full-mid.jpg"; 
preloadImg18= new Image(9,28); 
preloadImg18.src="/images/lb-full-rt.jpg"; 
preloadImg19= new Image(9,28); 
preloadImg19.src="/images/lb-hf-btm-lt.jpg"; 
preloadImg20= new Image(9,28); 
preloadImg20.src="/images/lb-hf-btm-rt.jpg"; 
preloadImg21= new Image(9,28); 
preloadImg21.src="/images/lb-hf-top-lt.jpg"; 
preloadImg22= new Image(9,28); 
preloadImg22.src="/images/lb-hf-top-rt.jpg"; 
preloadImg23= new Image(9,14); 
preloadImg23.src="/images/lb-qt-btm-lt.jpg"; 
preloadImg24= new Image(9,14); 
preloadImg24.src="/images/lb-qt-btm-rt.jpg"; 
preloadImg25= new Image(9,14); 
preloadImg25.src="/images/lb-qt-mid.jpg"; 
preloadImg26= new Image(9,14); 
preloadImg26.src="/images/lb-qt-top-lt.jpg"; 
preloadImg27= new Image(9,14); 
preloadImg27.src="/images/lb-qt-top-rt.jpg"; 
preloadImg28= new Image(250,49); 
preloadImg28.src="/images/logo.jpg"; 



//PAGE SPECIFIC FUNTIONS

function updateNewsFeed(feedType){
  //$('videoNewsFeedArea').innerHTML = "<center>LOADING ...</center>";
  var url = 'newsFeeds.php?nf='+feedType;
  $('videoNewsFeedArea').src = url;
}
function showAboutUs(){
  var url = 'aboutUs.php';
  $('videoNewsFeedArea').src = url;
}
function showContactUs(){
  var url = 'contactUs.php';
  $('videoNewsFeedArea').src = url;
}
function openWin(url){
  var newWindow = window.open(url);
}

function checkSubsForm(oForm){
  if(is_email(oForm.subs.value)) return true;
  alert("Invalid Email Address.");
  oForm.subs.focus();
  oForm.subs.select();
  return false;
}

function checkNewsletterForm(oForm){
  if(!is_email(oForm.email.value)){
	  alert("Invalid Email Address.");
	  oForm.email.focus();
	  oForm.email.select();
	  return false;
  }
  return true;
}

//UTILITY FUNCTIONS
function is_email(emailStr) 
{
  var emailPat=/^(.+)@(.+)$/ ;
  var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]";
  var validChars="\[^\\s" + specialChars + "\]";
  var quotedUser="(\"[^\"]*\")";
  var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/ ;
  var atom=validChars + '+' ;
  var word="(" + atom + "|" + quotedUser + ")";
  var userPat=new RegExp("^" + word + "(\\." + word + ")*$");
  var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");
  var matchArray=emailStr.match(emailPat);
  if (matchArray==null) 
  {
    //alert("Email address seems incorrect (check @ and .'s)");
    return false;
  }
  var user=matchArray[1];
  var domain=matchArray[2];
  if (user.match(userPat)==null) 
  {
    //alert("The username doesn't seem to be valid.");
    return false;
  }
  var IPArray=domain.match(ipDomainPat);
  if (IPArray!=null) 
  {
      for (var i=1;i<=4;i++) 
      {
      if (IPArray[i]>255) 
      {
        //alert("Destination IP address is invalid!");
        return false;
      }
    }
    return true;
  }
  var domainArray=domain.match(domainPat);
  if (domainArray==null) 
  {
    //alert("The domain name doesn't seem to be valid.");
    return false;
  }
  var atomPat=new RegExp(atom,"g");
  var domArr=domain.match(atomPat);
  var len=domArr.length;
  if (domArr[domArr.length-1].length<2 || domArr[domArr.length-1].length>3) 
  {
     //alert("The address must end in a three-letter domain, or two letter country.");
     return false;
  }
  if (len<2) 
  {
     //alert("This address is missing a hostname!");
     return false;
  }
  return true;
}