function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			if(changeImages.arguments[i] == thisPage + "BTN"){
				return false;
			}
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		aboutBTN_over = newImage("images/aboutBTN_over.jpg");
		portfolioBTN_over = newImage("images/portfolioBTN_over.jpg");
		testimonialsBTN_over = newImage("images/testimonialsBTN_over.jpg");
		contactBTN_over = newImage("images/contactBTN_over.jpg");
		preloadFlag = true;
	}
}

function buildNav(){

var	currentDocImg = thisPage + "BTN"

document.write("<table cellpadding=\"0\" cellspacing=\"0\">")
document.write("  <tr>")
document.write("    <td width=\"147\" height=\"55\" valign=\"top\"><img src=\"images/leftwaterTop.jpg\"></td>")
document.write("  </tr>")
document.write("  <TR>")
document.write("		<TD>")
document.write("			<A HREF=\"main.htm\"")
document.write("				ONMOUSEOVER=\"changeImages('mainBTN', 'images/mainBTN_over.jpg'); return true;\"")
document.write("				ONMOUSEOUT=\"changeImages('mainBTN', 'images/mainBTN.jpg'); return true;\">")
document.write("				<img name=\"mainBTN\" src=\"images/mainBTN.jpg\" border=\"0\"></A></TD>")
document.write("		</TD>")
document.write("</TR>")
document.write("	<TR>")
document.write("		<TD>")
document.write("			<A HREF=\"portfolio.htm\"")
document.write("				ONMOUSEOVER=\"changeImages('portfolioBTN', 'images/portfolioBTN_over.jpg'); return true;\"")
document.write("				ONMOUSEOUT=\"changeImages('portfolioBTN', 'images/portfolioBTN.jpg'); return true;\">")
document.write("				<IMG NAME=\"portfolioBTN\" SRC=\"images/portfolioBTN.jpg\" border=\"0\"></A></TD>")
document.write("	</TR>")
document.write("	<TR>")
document.write("		<TD>")
document.write("			<A HREF=\"testimonials.htm\"")
document.write("				ONMOUSEOVER=\"changeImages('testimonialsBTN', 'images/testimonialsBTN_over.jpg'); return true;\"")
document.write("				ONMOUSEOUT=\"changeImages('testimonialsBTN', 'images/testimonialsBTN.jpg'); return true;\">")
document.write("				<IMG NAME=\"testimonialsBTN\" SRC=\"images/testimonialsBTN.jpg\" border=\"0\"></A></TD>")
document.write("	</TR>")
document.write("  <TR>")
document.write("		<TD>")
document.write("			<A HREF=\"frombuilder.htm\"")
document.write("				ONMOUSEOVER=\"changeImages('builderBTN', 'images/builderBTN_over.jpg'); return true;\"")
document.write("				ONMOUSEOUT=\"changeImages('builderBTN', 'images/builderBTN.jpg'); return true;\">")
document.write("				<img name=\"builderBTN\" src=\"images/builderBTN.jpg\" border=\"0\"></A></TD>")
document.write("		</TD>")
document.write("</TR>")
document.write("	<TR>")
document.write("		<TD>")
document.write("			<A HREF=\"contact.htm\"")
document.write("				ONMOUSEOVER=\"changeImages('contactBTN', 'images/contactBTN_over.jpg'); return true;\"")
document.write("				ONMOUSEOUT=\"changeImages('contactBTN', 'images/contactBTN.jpg'); return true;\">")
document.write("				<IMG NAME=\"contactBTN\" SRC=\"images/contactBTN.jpg\" border=\"0\"></A></TD>")
document.write("	</TR>")
document.write("	<tr>")
document.write("    <td width=\"147\" height=\"206\" valign=\"top\"><img src=\"images/leftwaterBTM.jpg\"></td>")
document.write("  </tr>")
document.write("</table>")

document.images[currentDocImg].src = 'images/' + currentDocImg + '_over.jpg'
}