function show_slide(  ) {
	
	nodeObj		= document.getElementById( 'box_slide' );
	
	firstObj	= nodeObj.firstChild;
	
	mar_old	= firstObj.style.marginTop;
	mar_new = parseInt( mar_old ) + 1 + 'px';
	
	if ( parseInt( mar_new ) < 1 ) {
		
		firstObj.style.marginTop	= mar_new;
	}
	else {
		
		lastObj		= nodeObj.lastChild;
		el_height	= lastObj.clientHeight;
		
		lastObj.style.marginTop	= '-' + el_height + 'px';
		
		nodeObj.insertBefore( lastObj, firstObj );
	}

	setTimeout( 'show_slide(  );', 20 );
}