Update main.js

125-131

        } else if( ( maxHeight >= 6 )&& (maxHeight < 7 )){
          waveHeight="20px";
        } else if( ( maxHeight >= 7 )&& (maxHeight < 8 )){
          waveHeight="10px";  
        } else if( ( maxHeight >= 8 )&& (maxHeight < 9 )){
          waveHeight="5px";  
        }