function image_chg() {
	current_img++ 
	if (current_img > images.length - 1) {
		current_img=0;
	}
	document.image_chg.src = images[current_img];
	setTimeout('image_chg()',4000);
}
image1 = new Image; image1.src = "ProjectImages/6thstroundabout.jpg";
image2 = new Image; image2.src = "ProjectImages/6thstbridge.jpg";
image3 = new Image; image3.scr = "ProjectImages/6thstreet.jpg";
image4 = new Image; image4.src = "ProjectImages/bioretention.jpg";
image5 = new Image; image5.scr = "ProjectImages/butlers.jpg";
image6 = new Image; image6.src = "ProjectImages/DRSTech.jpg";
image7 = new Image; image7.src = "ProjectImages/field.jpg";
image8 = new Image; image8.src = "ProjectImages/offroadtruck.jpg";
image9 = new Image; image9.src = "ProjectImages/Pavers1.jpg";
image10 = new Image; image10.scr = "ProjectImages/pavers2.jpg";
image11 = new Image; image11.scr = "ProjectImages/plans.jpg";
image12 = new Image; image12.scr = "ProjectImages/pond.jpg";
image13 = new Image; image13.scr = "ProjectImages/pond.jpg";
image14 = new Image; image14.scr = "ProjectImages/porousconcrete.jpg";
image15 = new Image; image15.scr = "ProjectImages/PSMPconc.jpg";
image16 = new Image; image16.scr = "ProjectImages/pyramax.jpg";
image17 = new Image; image17.scr = "ProjectImages/roadway.jpg";
image18 = new Image; image18.scr = "ProjectImages/sewer.jpg";
	
images= new Array(5);
images[0] = image1.src;
images[1] = image2.src;
images[2] = image3.src;
images[3] = image4.src;
images[4] = image5.src;
images[5] = image6.src;
images[6] = image7.src;