Something

(function() {
	var allT; 
	var allR;
	var plonk = new Array(); 
	var ignore_threads_from = ["Fourthmeal", "Dave Thomas"];
	
	for (var i = 0; i < ignore_threads_from.length; i++){
    plonk[ignore_threads_from[i]] = ignore_threads_from[i];
	}
	
	
	allT = document.getElementsByTagName('table');
	for (var i = 0; i < allT.length; i++) {
	    if(allT[i].innerHTML.match(http://games.thehavennet.org.uk/index.php)){
		    allT[i].style.display="none";
	    	
	    	//Add ignored user to list of ignored users
	    	plonk[RegExp.$1] = RegExp.$1;
	    	}
    	}

  allR = document.getElementsByTagName('tr');
	// Remove posts started by a user on the ignore list
	for (var i = 0; i < allR.length; i++) {
   		for (var x in plonk) {
		    if(allR[i].innerHTML.match("<span .*>"+plonk[x]+"</span>")){
			    allR[i].style.display="none";
	    		}
    		}
    	}

    	
})();