function imgRestore(){
	document.images['imgSwap'].src = 'images/iowaMap.jpg';
}

function imgSwapper(swappingImg){
	document.images['imgSwap'].src = swappingImg;
}

function preloader(){

     // counter
     var i = 0;


     // create object
     imageObj = new Image();


     // set image list
     images = new Array();
     images[0]="images/locations/clarinda.jpg"
     images[1]="images/locations/creston.jpg"
     images[2]="images/locations/indianola.jpg"
     images[3]="images/locations/knoxville.jpg"
     images[4]="images/locations/lenox.jpg"
     images[5]="images/locations/winterset.jpg"
	 images[6]="images/locations/leon.jpg"
	 images[7]="images/locations/albia.jpg"

     // start preloading
     for(i=0; i<=3; i++) 
     {
          imageObj.src=images[i];
     }

}