var bg_images = new Array(); 
 //all the images in a list.  Woot.
 bg_images[0] = 'images/housenew/1.jpg';
 bg_images[1] = 'images/housenew/2.jpg';
 bg_images[2] = 'images/housenew/3.jpg';
 bg_images[3] = 'images/housenew/4.jpg';
 bg_images[4] = 'images/housenew/5.jpg';
 bg_images[5] = 'images/housenew/6.jpg';
 bg_images[6] = 'images/housenew/7.jpg';
 bg_images[7] = 'images/housenew/8.jpg';
 bg_images[8] = 'images/housenew/9.jpg';
 bg_images[9] = 'images/housenew/10.jpg';
 bg_images[10] = 'images/housenew/11.jpg';
 bg_images[11] = 'images/housenew/12.jpg';
 bg_images[12] = 'images/housenew/13.jpg';
 bg_images[13] = 'images/housenew/14.jpg';
 bg_images[14] = 'images/housenew/15.jpg';
 bg_images[15] = 'images/housenew/16.jpg';
 bg_images[16] = 'images/housenew/17.jpg';
 bg_images[17] = 'images/housenew/18.jpg';
 bg_images[18] = 'images/housenew/19.jpg';
 bg_images[19] = 'images/housenew/20.jpg';
 bg_images[20] = 'images/housenew/21.jpg';
 bg_images[21] = 'images/housenew/22.jpg';
 bg_images[22] = 'images/housenew/23.jpg';
 bg_images[23] = 'images/housenew/24.jpg';
 bg_images[24] = 'images/housenew/25.jpg';
 bg_images[25] = 'images/housenew/26.jpg';
 bg_images[26] = 'images/housenew/27.jpg'; 
 //the delay between change-over, in milliseconds.
 var speed = 10000;
 
 j = bg_images.length;
 function bg_change_over()
	{
    j++;
	if(j < bg_images.length)
	 {
     document.getElementById('left_history').style.backgroundImage = "url('" + bg_images[j] + "')";
	 }
	else
	 {
     j=0;
     document.getElementById('left_history').style.backgroundImage = "url('" + bg_images[j] + "')";
	 }
    setTimeout("bg_change_over()", speed);
	}

 bg_change_over();