public String getParameterString(){
		String retString = "";
		try{
			if(url!=null) retString+="&url="+URLEncoder.encode(url,"UTF-8");
			if(html!=null) retString+="&html="+URLEncoder.encode(html,"UTF-8");
			if(text!=null) retString+="&text="+URLEncoder.encode(text,"UTF-8");
			if(customParameters!=null) retString+=customParameters;
			if(outputMode!=null) retString+="&outputMode="+outputMode;
		}
		catch(UnsupportedEncodingException e ){
			retString = "";
		}
		return retString;
	}