if ((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4 )){
	document.write('<link rel="stylesheet" href="css/ieall.css" type="text/css">');
}
else if ((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) >= 4)){
	document.write('<link rel="stylesheet" href="css/ieall.css" type="text/css">');
}
else{document.write('<link rel="stylesheet" href="css/ieall.css" type="text/css">')}


if (document.images) { 

    	but1up = new Image(); 
		but1up.src = "images/curlst_off.gif";
		but2up = new Image(); 
		but2up.src = "images/aboutnancy_off.gif";
		but3up = new Image(); 
		but3up.src = "images/tipstool_off.gif";
		but4up = new Image(); 
		but4up.src = "images/pclinks_off.gif";
		but5up = new Image(); 
		but5up.src = "images/contactnancy_off.gif";
		but6up = new Image(); 
		but6up.src = "images/newsletter_off.gif";
		
		but7up = new Image(); 
		but7up.src = "images/curlstm_off.gif";
		but8up = new Image(); 
		but8up.src = "images/aboutnancym_off.gif";
		but9up = new Image(); 
		but9up.src = "images/tipstoolm_off.gif";
		but10up = new Image(); 
		but10up.src = "images/pclinksm_off.gif";
		but11up = new Image(); 
		but11up.src = "images/contactnancym_off.gif";
		but12up = new Image(); 
		but12up.src = "images/newsletterm_off.gif";
		
		but13up = new Image(); 
		but13up.src = "images/blank.gif";
		but14up = new Image(); 
		but14up.src = "images/blank.gif";
		but15up = new Image(); 
		but15up.src = "images/blank.gif";				
		but16up = new Image(); 
		but16up.src = "images/blank.gif";
		but17up = new Image(); 
		but17up.src = "images/blank.gif";
		but18up = new Image(); 
		but18up.src = "images/blank.gif";
											
  		but1dn = new Image(); 
		but1dn.src = "images/curlst_on.gif";
		but2dn = new Image(); 
		but2dn.src = "images/aboutnancy_on.gif";
		but3dn = new Image(); 
		but3dn.src = "images/tipstool_on.gif";
		but4dn = new Image(); 
		but4dn.src = "images/pclinks_on.gif";
		but5dn = new Image(); 
		but5dn.src = "images/contactnancy_on.gif";
		but6dn = new Image(); 
		but6dn.src = "images/newsletter_on.gif";
		
		but7dn = new Image(); 
		but7dn.src = "images/curlstm_on.gif";
		but8dn = new Image(); 
		but8dn.src = "images/aboutnancym_on.gif";
		but9dn = new Image(); 
		but9dn.src = "images/tipstoolm_on.gif";
		but10dn = new Image(); 
		but10dn.src = "images/pclinksm_on.gif";
		but11dn = new Image(); 
		but11dn.src = "images/contactnancym_on.gif";
		but12dn = new Image(); 
		but12dn.src = "images/newsletterm_on.gif";
		
		but13dn = new Image(); 
		but13dn.src = "images/but.gif";
		but14dn = new Image(); 
		but14dn.src = "images/but.gif";
		but15dn = new Image(); 
		but15dn.src = "images/but.gif";
		but16dn = new Image(); 
		but16dn.src = "images/but.gif";
		but17dn = new Image(); 
		but17dn.src = "images/but.gif";
		but18dn = new Image(); 
		but18dn.src = "images/but.gif";

		
   }
function imgAct(imgName) {
    if (document.images) {
    document[imgName].src = eval(imgName + 'dn.src');
    }
}

function imgInact(imgName) {
    if (document.images) {
    document[imgName].src = eval(imgName + 'up.src');
    }
}


function actMenuItem(img1, img2) {
		imgAct(img1)
    	imgAct(img2)
}

function inactMenuItem(img1, img2) {
		imgInact(img1)
        imgInact(img2)
}


function isEmpty(str) {
	return ((str == null) || (str == ""));
}

function validate(f){
    var err = "";
    var focus = "";

    if (isEmpty(document.maillist.Name.value)){
        if (isEmpty(err))
			focus="#name";
        	err += "You must provide your Name.\n";
		};
    
	if (isEmpty(document.maillist.Email.value)){
        if (isEmpty(err))
            focus="#email";
        err += "You must provide your email address.\n";
        }
        else {
	        tempstring = document.maillist.Email.value;
        	if ((tempstring.indexOf('@') == -1 ) || (tempstring.indexOf('.') == -1 )){
    	      err += "Ensure that your email address is valid.\n";
        	  focus="#email";
        	}
    	};
	
	    // check if any errors have been generated, if so display alert

    if (err != "") {
        var msg = "The form was not submitted.\n";
        msg += "Please fill in all required fields and resubmit. Thank you.\n\n" + err;
        alert(msg);
        location.href = focus;
        return false;
    }
    // all checks validated, allow form to be submitted
    return true;
}