// Preload all menu images
menu1 = new Image(119,40);
menu1.src = "images/menu-blog.gif";
menu2 = new Image(119,40);
menu2.src = "images/menu-blog-h.gif";
menu3 = new Image(115,40);
menu3.src = "images/menu-contact.gif";
menu4 = new Image(115,40);
menu4.src = "images/menu-contact-h.gif";
menu5 = new Image(119,40);
menu5.src = "images/menu-cs.gif";
menu6 = new Image(119,40);
menu6.src = "images/menu-cs-h.gif";
menu7 = new Image(119,40);
menu7.src = "images/menu-download.gif";
menu8 = new Image(119,40);
menu8.src = "images/menu-download-h.gif";
menu9 = new Image(114,40);
menu9.src = "images/menu-home.gif";
menu10 = new Image(114,40);
menu10.src = "images/menu-home-h.gif";
menu11 = new Image(119,40);
menu11.src = "images/menu-rh.gif";
menu12 = new Image(119,40);
menu12.src = "images/menu-rh-h.gif";
menu13 = new Image(119,40);
menu13.src = "images/menu-st.gif";
menu14 = new Image(119,40);
menu14.src = "images/menu-st-h.gif";
menu15 = new Image(119,40);
menu15.src = "images/menu-tanks.gif";
menu16 = new Image(119,40);
menu16.src = "images/menu-tanks-h.gif";

function externalLinks() {
	if (!document.getElementsByTagName) return;
	var anchors = document.getElementsByTagName("a");
	for (var i=0; i<anchors.length; i++) {
		var anchor = anchors[i];
		if (anchor.getAttribute("href") && anchor.getAttribute("rel") == "external")
		anchor.target = "_blank";
	}
}

function validate_form(thisform) {
  with (thisform) {
		if (contactName.value == '' || phone.value == '') {
			alert("Please ensure you have provided your name and telephone number");
			return false
		}
	}
}