var textIsVisible = false;
function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}
//this function swaps the images
function changeImages() {
	if (document.images && (preloadFlag == true)) {	
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			if(changeImages.arguments[i+2]=='home'){
		document[changeImages.arguments[i]].src = 'images/' + changeImages.arguments[i] + '-' + changeImages.arguments[i+1] + '.gif';
			}
			else{
			document[changeImages.arguments[i]].src = '../images/' + changeImages.arguments[i] + '-' + changeImages.arguments[i+1] + '.gif';
			}
			
	//		alert('images/' + changeImages.arguments[i] + '_'  + changeImages.arguments[i+1] + '.jpg');	
		}
	}
}
var preloadFlag = false;
function preloadImages(page) {
	if (document.images) {
		x = newImage("images/b-sculpture-over.gif");
		x = newImage("images/b-process-over.gif");
		x = newImage("images/b-public-over.gif");
		x = newImage("images/b-contact-over.gif");
		x = newImage("images/b-media-over.gif");
		x = newImage("images/b-about-over.gif");
		preloadFlag = true;
	}

}
function switchDiv(div_id)
{
  var style_sheet = getStyleObject(div_id);
  if (style_sheet)
  {
    changeObjectVisibility(div_id);
  }
}
function getStyleObject(objectId) {
  // checkW3C DOM, then MSIE 4, then NN 4.
  if(document.getElementById && document.getElementById(objectId)) {
	return document.getElementById(objectId).style;
   }
   else if (document.all && document.all(objectId)) {  
	return document.all(objectId).style;
   } 
   else if (document.layers && document.layers[objectId]) { 
	return document.layers[objectId];
   } else {
	return false;
   }
}
function changeObjectVisibility(objectId) {
    var styleObject = getStyleObject(objectId);
    if (styleObject) {
	var curVisibility = styleObject.display;
	if (curVisibility == "none"||curVisibility==""){
	styleObject.display = "block";
	}
	else{
	styleObject.display = "none";
	}
	return true;
    } else {
	return false;
    }
}