// preloading
var img_menu_home_over=new Image();
var img_menu_company_over=new Image();
var img_menu_work_over=new Image();
var img_menu_contact_over=new Image();
var img_menu_sitemap_over=new Image();

img_menu_home_over.src="images/menu/menu_home_over.gif";
img_menu_company_over.src="images/menu/menu_company_over.gif";
img_menu_work_over.src="images/menu/menu_work_over.gif";
img_menu_contact_over.src="images/menu/menu_contact_over.gif";
img_menu_sitemap_over.src="images/menu/menu_sitemap_over.gif";

// roll over function
function rollOver(imageName,newImageName){
	document[imageName].src = "images/"+newImageName;
}

// this function creates a mailto: link to help prevent address mining

function MailTo(ename,edomain,esubject,clickable,classname,imgdetail,linktext) {
	thislink = "mailto:" + ename + "@" + edomain;
	esubject.length != 0 ? thislink += "?subject=" + esubject : thislink = thislink;
	if (linktext == ''){
		thistext = ename + "@" + edomain;
	} else {
		thistext = linktext;
	}
	if (clickable == 1) {
		if (imgdetail == ''){
			if (classname ==''){
				return thistext.link(thislink);
			} else {
				thisclasslink =  "<a href='" + thislink + "' class='" + classname + "'>" + thistext + "</a>"
				return thisclasslink;
			}
		} else {
			thisimglink = "<a href='" + thislink + "'><img " + imgdetail + "></a>";
			return thisimglink;
		}
	} else {
		return thistext;
	}
}

//personal information validation function

function validate(){	
	//name empty value validation
	var inputName=document.forms["contactForm"].elements["Username"].value;
	if(inputName==""){
		alert("Please enter your name.");
		return false;		
	}		
	//e-mail empty value validation
	var inputEmail=document.forms["contactForm"].elements["UserEmail"].value;	
	if(inputEmail==""){
		alert("Please enter your e-mail address.");
		return false;		
	}
}