function preloadImg() {
	var imgs = new Array ();
	var imgFiles = new Array ('images/home_on.gif', 'images/contactus_on.gif');
	for (var i = 0; i < imgFiles.length; i++) {
		imgs[i] = new Image;
		imgs[i].src = imgFiles[i];
	}
}

function bookmarkSite(thisURL, thisTitle) {
      window.external.AddFavorite("http://www.chpna.ca/index.php?" + thisURL, thisTitle);
}

function swapImg (obj, imgName) {
	if (document.images) { obj.src = imgName };
}


function openWindow(mypage,myname,w,h,scroll){
	LeftPosition = (744) ? (744-w)/2 : 0;
	TopPosition = (screen.height) ? (screen.height-h)/2 : 0;
	settings = 'height='+h+',width='+w+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',resizable=no'
	var win = window.open(mypage,myname,settings);
      win.opener = self;
}

function textCounter( field, countfield, maxlimit ) {
  if ( field.value.length > maxlimit )
  {
    field.value = field.value.substring( 0, maxlimit );
    alert( 'This text field has a limit of ' + maxlimit + ' characters.' );
    return false;
  }
  else
  {
    countfield.value = maxlimit - field.value.length;
  }
}