var d = document;



function write_footer() {

	var page=d.location.href;

	var path=((page.indexOf('products')!=-1) || (page.indexOf('what')!=-1) || (page.indexOf('how')!=-1)) ? "../":"";

  //2/7/04 - use different stylesheet for Gecko-based browsers

	if (navigator.userAgent.indexOf('MSIE')<1) d.writeln('<style type="text/css">@import("'+path+'styles_moz.css")</style>');

	d.writeln('<div id="footer"');

	d.writeln(' style="background:url(\''+path+'images/bg.gif\') no-repeat bottom left">');

	d.writeln('<div id="elink"><a href="mailto:davidl@netexecutive.com?subject=Richard%20Krijgsman%20website">Site credits</a></div>');

	d.writeln('</div>');

}



// HIGHLIGHT CURRENT SECTION ON NAVBAR

function highlightnav() {

  var d = document;

  var page = d.location.href;

	if (page.indexOf('what')!=-1) showhide('whatMenu'); // expand nav submenu if nec.

	if (page.indexOf('products')!=-1) showhide('productsMenu');

	if ( (page.indexOf('products')!=-1) || (page.indexOf('what')!=-1) || (page.indexOf('how')!=-1)) {

		lastdir = page.slice(0, page.lastIndexOf("/"));

		page = lastdir.substr(lastdir.lastIndexOf("/")+1);

	} else {

		page = page.slice(page.lastIndexOf("/")+1, page.lastIndexOf("."));

	}

	if (page != 'main') {

		eval("var onSrc=d.images['"+page+"'].src.substring(0, d.images['"+page+"'].src.lastIndexOf('/')) + '/on/"+page+".gif';");

		eval("d.images['"+page+"'].src='"+onSrc+"';");

	}

}







// 9/5/03, DL - remove padding around a string

function trim(s){s=s.replace("/^[ \t]/", "");s=s.replace("/[ \t]$/", "");return s;}



// toggle visibility of navbar submenu or extra info DIV contents

function showhide(which) {

  var vVis=eval("document.getElementById('"+which+"').style.visibility");

  if (vVis== "visible") {

	hideDiv(which);

  } else {

	showDiv(which);

	if (which=='productsMenu') hideDiv('whatMenu');

	if (which=='whatMenu') hideDiv('productsMenu');

  }

}



// swap 'more/less' button images and toggle visibility the DIV containing extra content 

function more_less(which) {

	var d=document;

/* 19/1/04 - whichI=name of the relevant more/less image (more1, more2) 

	whereas which=moreinfo1 etc.	Workaround for an MSIE bug. */

	whichI=which.substr(0,4) + which.substr(which.length-1,1);

	eval("more_or_less=d.images['"+whichI+"'].src;");

	if (more_or_less.indexOf('more')!=-1) {

		eval("d.images['"+whichI+"'].src=more_or_less.substring(0, more_or_less.lastIndexOf('/')) + '/less.gif';");

	} else {

		eval("d.images['"+whichI+"'].src=more_or_less.substring(0, more_or_less.lastIndexOf('/')) + '/more.gif';");

	}

	showhide(which);

}



function hideDiv(which) {

	eval("document.getElementById('"+which+"').style.display='none'");

	eval("document.getElementById('"+which+"').style.visibility='hidden'");

}



function showDiv(which) {

	eval("document.getElementById('"+which+"').style.display=''");

	eval("document.getElementById('"+which+"').style.visibility='visible'");

}



// Standard MM functions (not all are used)

function MM_preloadImages() { //v3.0

  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();

    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)

    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}

}



function MM_swapImgRestore() { //v3.0

  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;

}



function MM_findObj(n, d) { //v4.01

  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {

    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}

  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];

  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);

  if(!x && d.getElementById) x=d.getElementById(n); return x;

}



function MM_swapImage() { //v3.0

  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)

   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}

}



/* Functions that swaps down images. */

function MM_nbGroup(event, grpName) { //v3.0

  var i,img,nbArr,args=MM_nbGroup.arguments;

  if (event== "init" && args.length > 2) {

    if ((img=MM_findObj(args[2])) != null && !img.MM_init) {

      img.MM_init=true; img.MM_up=args[3]; img.MM_dn=img.src;

      if ((nbArr=document[grpName])== null) nbArr=document[grpName]=new Array();

      nbArr[nbArr.length]=img;

      for (i=4; i<args.length-1; i+=2) if ((img=MM_findObj(args[i])) != null) {

        if (!img.MM_up) img.MM_up=img.src;

        img.src=img.MM_dn=args[i+1];

        nbArr[nbArr.length]=img;

    } }

  } else if (event== "over") {

    document.MM_nbOver=nbArr=new Array();

    for (i=1; i<args.length-1; i+=3) if ((img=MM_findObj(args[i])) != null) {

      if (!img.MM_up) img.MM_up=img.src;

      img.src=(img.MM_dn && args[i+2]) ? args[i+2] : args[i+1];

      nbArr[nbArr.length]=img;

    }

  } else if (event== "out" ) {

    for (i=0; i<document.MM_nbOver.length; i++) {

      img=document.MM_nbOver[i]; img.src=(img.MM_dn) ? img.MM_dn : img.MM_up; }

  } else if (event== "down") {

    if ((nbArr=document[grpName]) != null)

      for (i=0; i<nbArr.length; i++) { img=nbArr[i]; img.src=img.MM_up; img.MM_dn=0; }

    document[grpName]=nbArr=new Array();

    for (i=2; i<args.length-1; i+=2) if ((img=MM_findObj(args[i])) != null) {

      if (!img.MM_up) img.MM_up=img.src;

      img.src=img.MM_dn=args[i+1];

      nbArr[nbArr.length]=img;

  } }

}



function MM_validateForm() { //v4.0

  var i,p,q,nm,test,num,min,max,errors='',args=MM_validateForm.arguments;

  for (i=0; i<(args.length-2); i+=3) { test=args[i+2]; val=MM_findObj(args[i]);

    if (val) { nm=val.name; if ((val=val.value)!="") {

      if (test.indexOf('isEmail')!=-1) { p=val.indexOf('@');

        if (p<1||p==(val.length-1)) errors+='- '+nm+' must contain an e-mail address.\n';

      } else if (test!='R') { num=parseFloat(val);

        if (isNaN(val)) errors+='- '+nm+' must contain a number.\n';

        if (test.indexOf('inRange') != -1) { p=test.indexOf(':');

          min=test.substring(8,p); max=test.substring(p+1);

          if (num<min||max<num) errors+='- '+nm+' must contain a number between '+min+' and '+max+'.\n';

    } } } else if (test.charAt(0)== 'R') errors += '- '+nm+' is required.\n'; }

  } if (errors) alert('The following error(s) occurred:\n'+errors);

  document.MM_returnValue=(errors== '');

}