// JavaScript Document

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];}
}

function buy($isbn){ //buy from Amazon using 10 or 13 digit ISBNs
	$tag='valerwildi-21';
	$re=/-/g;  //the regular expression to remove hyphens
	$isbnraw=$isbn.replace($re,"");
			
	$amazonlink="";
	if ($isbnraw.length==10){//traditional
		$amazonlink="http://www.Amazon.co.uk/exec/obidos/ASIN/" + $isbnraw + "/" + $tag ;
		}
	else  {//13 digit means look it up in amazon
		$amazonlink="http://www.amazon.co.uk/gp/search?keywords=" + $isbnraw + "&index=books&linkCode=qs&tag=" + $tag ;
					
	}
	am=window.open($amazonlink, 'amazon');
	am.focus()
}

function email(a,b){
	document.location = "mailto:" + a + "\x40" + b;
}

function email2(addr){
	//addr is the address with a @ sign replaced by an image
	//find the first <
	str=addr.innerHTML
	//alert (str)
	bit=str.split(/[<>]/)
	a=bit[0]
	b=bit[2]
	document.location = "mailto:" + a + "\x40" + b;
}