function isDirty(field) {
	words = new Array('sex','kontol','babes','shit','fuck','ngentot','damn','porno','cum','cunt','prick','pecker',
					  'ass','memek','asshole','pedophile','twat','bangsat','brengsek');
	inputs = new Array();
	txt=field.value;
	if(txt != ''){
		inputs = txt.split(" ");
	}
		
	dirty = false;
	word = "";
	i=0;
	while (i < (inputs.length) && !dirty){
		for (var j=0;j<words.length;j++){
			if(inputs[i].toLowerCase() == words[j].toLowerCase()){
				dirty = true;
				word = inputs[i].toLowerCase();
			}
		}
		i++;
	}
	
	if(dirty) 
		alert("Dirty word '" + word + "' are not allow.");
	//form.dirt.value=dirty;
	return dirty;
}// End -->