var myimages=new Array()
function preloadimages(){
    for( i=0; i<preloadimages.arguments.length; i++ ){
        myimages[i]=new Image()
	myimages[i].src=preloadimages.arguments[i]
    }
}

//Enter path of images to be preloaded inside parenthesis. Extend list as desired.
preloadimages("images/btn_physicians-ro.html","images/btn_healthcare-op.html","images/healthcare.html", "images/physicians.html");