pic1= new Image(54,54); 
pic1.src="./images/submit3_over.gif"; 
  
pic2 = new Image(54, 54);
pic2.src="./images/submit3.gif"; 

pic1= new Image(54,54); 
pic1.src="./images/submit_test_over.png"; 
  
pic2 = new Image(54, 54);
pic2.src="./images/submit_test.png";