this.blankwin = function(){
	var hostname = window.location.hostname;
	hostname = hostname.replace("www.","").toLowerCase();
	var a = document.getElementsByTagName("a");
	this.check = function(obj){
		var href = obj.href.toLowerCase();
		if ( href.indexOf("http://") != -1 &&
			 href.indexOf("widearea.co.uk") == -1 &&
			 href.indexOf(hostname)==-1 )
			 return true ;
		else
			return false;
	};
	this.set = function(obj){
		obj.target = "_blank";
		obj.className = "external";
	};
	for (var i=0;i<a.length;i++){
		if(check(a[i])) set(a[i]);
	};
};