function dtm_select_color( number, color_num ){
     	var elements;
     	elements = document.getElementsByName("menu_back");
     	elements[ number ].style.backgroundColor = color_num;
}

function chng_img( number, src_str ){
       var elements;
       elements = document.sample_img;
       elements[ number ].src = src_str;

}

function chng_color(number, color_num){
	if( color_num == 0 ){
		dtm_select_color( number, '#fafafa' ); // mouse down
	} else if( color_num == 1 ){
		dtm_select_color( number, '#f3f3f3' ); // mouse over
	} else if( color_num == 2 ){
		dtm_select_color( number, 'white' ); // mouse out
	} else {
		dtm_select_color( number, color_num );
	}
}