function eml() {
	document.location="m"+ "a" + "ilto:bev"+ "@" + "bookservice.biz?Subject=Website query";
}
function eml_enq() {
	document.location="../v4/eml.htm";
}
function roll(img_name, img_src)    {
   document[img_name].src = img_src;
}
function swap(docID,img) {
imageSrc = "../../images/" + img;
e = document.getElementById(docID);
e.src = imageSrc;
}