// scripts
$(document).ready(function() {
	$('#btnIWCF').hover(
	  function () {
		$(this).attr('src','gfx/btns/iwcflinkover.gif'); 
	  },
	  function () {
		$(this).attr('src','gfx/btns/iwcflink.gif'); 
	  }
	);
	$('#btnIADC').hover(
	  function () {
		$(this).attr('src','gfx/btns/iadclinkover.gif'); 
	  },
	  function () {
		$(this).attr('src','gfx/btns/iadclink.gif'); 
	  }
	);
	$('#btnOTHER').hover(
	  function () {
		$(this).attr('src','gfx/btns/otherlinkover.gif'); 
	  },
	  function () {
		$(this).attr('src','gfx/btns/otherlink.gif'); 
	  }
	);
	$('#btnOTHERes').hover(
	  function () {
		$(this).attr('src','gfx/btns/otherlinkoveres.gif'); 
	  },
	  function () {
		$(this).attr('src','gfx/btns/otherlinkes.gif'); 
	  }
	);
	blink('#LogoTxt');
});
function blink(selector){
$(selector).fadeOut('slow', function(){
    $(this).fadeIn('slow', function(){
        blink(this);
    });
});
}
function ShowPop() {
	$('#Legal').slideDown('fast');
}
function ClosePop() {
	$('#Legal').slideUp('fast');
}
function setLang() {
	if($('#course').val().slice(0,4)=='IADC') {
		$('#paperlanguageS').show();
		$('#paperlanguageAll').hide();
	} else {
		$('#paperlanguageS').hide();
		$('#paperlanguageAll').show();
	}
}
//-->checkoffer
function sendoffer() {		
		errormsg = "";
		if (document.getElementById('xname').value == "0") { errormsg += "Please enter your name\n"; }
		if (document.getElementById('xtel').value == "0") { errormsg += "Please enter your telephone number\n"; }
		//var xemail=document.form1.email
		//if (echeck(xemail.value)==false){ errormsg += "Invalid email address.\n"; }
		if (errormsg == "") {		
			document.forms[0].submit();		
		} else {		
			alert(errormsg);		
		}
}
<!--
function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
//-->
// form validation
function checkform() {		
		errormsg = "";
		if (document.getElementById('course').value == "0") { errormsg += "Please select the required course\n"; }
		if (document.getElementById('previouslevel').value == "0") { errormsg += "Please select your previous level\n"; }
	    if (document.getElementById('fname').value == "") { errormsg += "Please enter your first name\n"; }
		if (document.getElementById('tel').value == "") { errormsg += "Please enter your telephone number.\n"; }		
		var emailID=document.form1.email
		if (echeck(emailID.value)==false){ errormsg += "Invalid email address.\n"; }		
		if (errormsg == "") {		
			document.form1.submit();		
		} else {		
			alert(errormsg);
		}
}

function echeck(str) {

	var at="@"
	var dot="."
	var lat=str.indexOf(at)
	var lstr=str.length
	var ldot=str.indexOf(dot)
	if (str.indexOf(at)==-1){
	   return false
	}

	if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
	   return false
	}

	if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		return false
	}

	 if (str.indexOf(at,(lat+1))!=-1){
		return false
	 }

	 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		return false
	 }

	if (str.indexOf(dot,(lat+2))==-1){
	   return false
	}

	if (str.indexOf(" ")!=-1){
	   return false
	}

	return true					
}