

isNS4 = (document.layers) ? true : false;
isIE4 = (document.all && !document.getElementById) ? true : false;
isIE5 = (document.all && document.getElementById) ? true : false;
isNS6 = (!document.all && document.getElementById) ? true : false;

function getObj(m)
{
    if (isNS4){
        elm = document.layers[m];
    }
    else if (isIE4){
        elm = document.all[m];
    }
    else if (isIE5 || isNS6){
        elm = document.getElementById(m);
    }
    return elm;
}

function changeNav(oNav, sImage)
{
    //Change nav image
    oNav.src = 'images/nav/' + sImage;
}

//Image rotation
var ImgCount = 0;
var ImgArr = new Array();
var LinkArr = new Array();
function preloadImg()
{
    var aImg = new Array('headimg1.gif','headimg2.gif','headimg3.gif','headimg4.gif','headimg5.gif');
    var aLink = new Array('aerospace.html','automotive.html','fabricating.html','military.html','machine.html');
    LinkArr = aLink;

    for(var i=0;i<aImg.length;i++) {
        ImgArr[i] = new Image();
        ImgArr[i].src = 'images/'+aImg[i];
    }
}

function swapImg(iCount)
{
    ImgCount = iCount;
    switchimg();
}

function switchimg()
{
    document.headimg.src = ImgArr[ImgCount].src;
    getObj('headimglink').href = LinkArr[ImgCount];
    ImgCount++;
    if(ImgCount >= ImgArr.length)
        ImgCount=0;
}

setInterval('switchimg()', 10000);

//Form error handling
function displayDesc(strmsg)
{
    helpWnd = window.open('','','top=150,left=150,width=400,height=450');
    if (!helpWnd.opener) helpWnd.opener = self;
    with (helpWnd.document)
    {
        write('<html>\n');
        write('<head><title>Form Help</title></head>\n');
        write('<body>\n');
        write('<table border="0" height="100%" width="100%">\n<tr><td valign="top">\n');
        write('<p style="font-weight: bold">Listed below is a list of errors that were encountered while processing your form</p>\n');
        write(strmsg);
        write('\n<br><br>\n');
        write('\n</td></TR><TR><TD VALIGN="BOTTOM">\n');
        write('<HR>\n');
        write('click <A href="javascript:window.close();">here</A> to close this window\n');
        write('</TD></TR>\n</TABLE>\n');
        write('</BODY>\n</HTML>\n');
    }
}
