function checkEmail(email) {
	if (!email.value=="") {
		eml = new RegExp("^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$");
		if (!eml.test(email.value)) {
			alert("You must enter a valid email address. (example: yourname@internet.com)");
			email.value="";
			email.focus();
			ret = false;
			return false;
		}
	}
}

var str = navigator.userAgent;
        if ((str.indexOf('Mozilla/') != -1) && (str.indexOf('a/2') == -1))
                {
				loading=new Image();
				loading.src="images/loading.jpg";
                button0=new Image();
                button1=new Image();
                button2=new Image();
                button3=new Image();
                button4=new Image();
                button5=new Image();
                button6=new Image();
                button7=new Image();
                button8=new Image();
                button9=new Image();
                button10=new Image();
                button11=new Image();
                button12=new Image();
                button13=new Image();
                button0.src="images/menu-cubes-out.jpg";
                button1.src="images/menu-cubes-in.jpg";
                button2.src="images/menu-foo-out.jpg";
                button3.src="images/menu-foo-in.jpg";
                button4.src="images/menu-cent-out.jpg";
                button5.src="images/menu-cent-in.jpg";
                button6.src="images/menu-tables-out.jpg";
                button7.src="images/menu-tables-in.jpg";
                button8.src="images/menu-bubble-out.jpg";
                button9.src="images/menu-bubble-in.jpg";
                button10.src="images/menu-bars-out.jpg";
                button11.src="images/menu-bars-in.jpg";
                button12.src="images/menu-otherdec-out.jpg";
                button13.src="images/menu-otherdec-in.jpg";
}

function display(num) {
                if ((str.indexOf('Mozilla/') != -1) && (str.indexOf('a/2') == -1))
                {
                if (num=="0") document.cubes.src=button0.src;
                if (num=="1") document.cubes.src=button1.src;
                if (num=="2") document.foo.src=button2.src;
                if (num=="3") document.foo.src=button3.src;
                if (num=="4") document.cent.src=button4.src;
                if (num=="5") document.cent.src=button5.src;
                if (num=="6") document.tables.src=button6.src;
                if (num=="7") document.tables.src=button7.src;
                if (num=="8") document.bubble.src=button8.src;
                if (num=="9") document.bubble.src=button9.src;
                if (num=="10") document.bars.src=button10.src;
                if (num=="11") document.bars.src=button11.src;
                if (num=="12") document.otherdec.src=button12.src;
                if (num=="13") document.otherdec.src=button13.src;
       }
}
function popUp(url,width,height) {
	eval("window.open(url,\"popUpWindow\",\"width="+width+",height="+height+"\")");
}

function swap(img) {
	document.big.src=loading.src;
	bigImg=new Image();
	bigImg.src=img;
	document.big.src=bigImg.src;
}

function checkContact() {
	x=document.contact;
	if (x.contact_name.value=="") {
		alert("You must enter your name.");
		x.contact_name.focus();
		return false;
	}
	if (x.phone.value=="") {
		alert("You must enter your phone number.");
		x.phone.focus();
		return false;
	}
	if (x.email.value=="") {
		alert("You must enter your email address.");
		x.email.focus();
		return false;
	}
	if (x.email.value!="" && checkEmail(x.email)==false) {
		return false;
	}
}

function checkRFP() {
	
}