function F_loadRollover(){
} 

function F_roll(){
}

// Handles rollover images for NN3+ and IE4+
var loaded = new Array();

function F_loadRollover(image,imageName) {
	if (image && image.src &&
		(null == image.out || typeof(image.out) == typeof(void(0)))) {
		s = image.src;
		image.out = new Image();
		image.out.src = s;
		image.over = new Image();
		if (imageName.lastIndexOf('/') >= 0 || imageName.lastIndexOf('\\') >= 0) {
			s = imageName;
		} else {
			i = s.lastIndexOf('/');
			if (i<0) i = s.lastIndexOf('\\');
			if (i<0) { s = imageName; }
			else	 { s = s.substring(0,i+1) + imageName; }
		}
		image.over.src = s;
		loaded[image.name] = image;
	}
}
function F_roll(imageName,over) {
	if (document.images) {
	if (over) { imageObject = "over"; }
	else	  { imageObject = "out"; }
	image = loaded[imageName];
	if (image) {
		ref = eval("image."+imageObject);
		if (ref) image.src = eval("image."+imageObject+".src");
	}
	if (window.event)
		window.event.cancelBubble = true;
	}
}
 


function popup(url, name, w, h, scroll)
{
var winl = (screen.width - w) / 2;
var wint = (screen.height - h) / 2;
winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars,toolbar,location,resizable';

  if (confirm("You are about to leave the www.mediahub.co.uk website."))
     MyNewWindow=window.open("http://"+url,name,winprops);

}




function externLink(link) {
  if (confirm("You are about to leave the www.mediahub.co.uk website."))
     window.location.href=link;
}



function golinks(){
    if (document.links.topic.options[document.links.topic.selectedIndex].value == "")
            return;
        else {
       location.href = document.links.topic.options[document.links.topic.selectedIndex].value;

    }
}




function emailCheck() {
txt=document.list.listmail.value;
if (txt.indexOf("@")<3){
alert("This email address appears inaccurate. Please"
+" check the address.");
return false;
}
if ((txt.indexOf(".com")<5)&&(txt.indexOf(".org")<5)
&&(txt.indexOf(".gov")<5)&&(txt.indexOf(".net")<5)
&&(txt.indexOf(".mil")<5)&&(txt.indexOf(".edu")<5)){
alert("This email address appears inaccurate. Please"
+" check the domain for accuracy. (It should include a suffix: "
+".com, .edu, .net, .org, .gov or .mil)");
return false;
   }
return true;
}




function pdfpop(url, name, w, h, scroll)
{
var winl = (screen.width - w) / 2;
var wint = (screen.height - h) / 2;
winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+scroll+',resizable';
NewWindow=window.open("http://"+url,name,winprops);

}


function printpopup(url, name, w, h, scroll)
{
var winl = (screen.width - w) / 2;
var wint = (screen.height - h) / 2;
winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars,toolbar,location,resizable';
NewWindow=window.open("http://"+url,name,winprops);

}