$(document).ready( function(){
	

	$( "#top_b1" ).mouseover( function( e ){
		$( "#contents_toppage" ).css( "background", "url( ../../img/main_p02.png )" );
		
	} );
	$( "#top_b1" ).mouseout( function( e ){
		$( "#contents_toppage" ).css( "background", "url( ../../img/main_p01.png )" );
	} );
	
	$( "#top_b2" ).mouseover( function( e ){
		$( "#contents_toppage" ).css( "background", "url( ../../img/main_p03.png )" );
	} );
	$( "#top_b2" ).mouseout( function( e ){
		$( "#contents_toppage" ).css( "background", "url( ../../img/main_p01.png )" );
	} );
	
	$( "#top_b3" ).mouseover( function( e ){
		$( "#contents_toppage" ).css( "background", "url( ../../img/main_p04.png )" );
	} );
	$( "#top_b3" ).mouseout( function( e ){
		$( "#contents_toppage" ).css( "background", "url( ../../img/main_p01.png )" );
	} );
	



	
});