// sitewide scripts


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_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('Sorry we could not submit your enquiry because:\n'+errors);
  document.MM_returnValue = (errors == '');
}


function av_linksafe(css,name,domain,linktext) {
document.write('<a class=\"' + css + '\" href=\"mailto:' + name + '@' + domain + '\">');
document.write(linktext + '</a>');
}

//randomised home page images
var theImages = new Array() 
theImages[0] = 'images/header_home0.jpg';
theImages[1] = 'images/header_home1.jpg';
theImages[2] = 'images/header_home2.jpg';
theImages[3] = 'images/header_home3.jpg';
theImages[4] = 'images/header_home4.jpg';
theImages[5] = 'images/header_home5.jpg';
theImages[6] = 'images/header_home6.jpg';

var p = theImages.length;
var rndImage = Math.round(Math.random()*(p-1));
var preLoad = new Image()
    preLoad.src = theImages[rndImage]

function showImage(){
document.write('<style type="text/css">#home #toppanel #toppanel-inner{background-image:url('+theImages[rndImage]+')}</style>');
}