// JavaScript Document

function changeObjectVisibility(objectId, newVisibility) {
    // first get the object's stylesheet
    var styleObject = getStyleObject(objectId);

    // then if we find a stylesheet, set its visibility
    // as requested
    //
    if (styleObject) {
	styleObject.visibility = newVisibility;
	return true;
    } else {
	return false;
    }
}

function changeObjectDisplay(objectId, newDisplay) {
    // first get the object's stylesheet
    var styleObject = getStyleObject(objectId);

    // then if we find a stylesheet, set its visibility
    // as requested
    //
    if (styleObject) {
	styleObject.display = newDisplay;
	return true;
    } else {
	return false;
    }
}

function changeObjectBg(objectId, newBgPos) {
	var styleObject = getStyleObject(objectId);
	
	if (styleObject) {
		styleObject.backgroundPosition = newBgPos;
		return true;
	} else {
		return false;
	}
}

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 hideAll()
{
   changeObjectVisibility("mychoice-disclaimer-box","hidden");
}

function showDiv(div_id) {
	var style_sheet = getStyleObject(div_id);
	if (style_sheet) {
		changeObjectVisibility(div_id, "visible");
	}
}

function hideDiv(div_id) {
	var style_sheet = getStyleObject(div_id);
	if (style_sheet) {
		changeObjectVisibility(div_id, "hidden");
	}
}

function showDivDisplay(div_id) {
	var style_sheet = getStyleObject(div_id);
	if (style_sheet) {
		changeObjectDisplay(div_id, "block");
	}
}

function hideDivDisplay(div_id) {
	var style_sheet = getStyleObject(div_id);
	if (style_sheet) {
		changeObjectDisplay(div_id, "none");
	}
}

function showWarning(div_id) {
	var style_sheet = getStyleObject(div_id);
	var checkbox1 = document.getElementById("mychoice-disclaimer-check");
	if (style_sheet) {
		if (checkbox1.checked == false) {
			changeObjectVisibility(div_id, "visible");
		}
	}
}

function hideWarning(div_id) {
	var style_sheet = getStyleObject(div_id);
	var checkbox1 = document.getElementById("mychoice-disclaimer-check");
	if (style_sheet) {
		if (checkbox1.checked == false) {
			changeObjectVisibility(div_id, "hidden");
		}
	}
}

	
function toggleButton(button_id) {
	var style_sheet = getStyleObject(button_id);
	var checkbox1 = document.getElementById("mychoice-disclaimer-check");
	if (style_sheet) {
		if (checkbox1.checked == true) {
			showDiv(button_id);
		} else {
			hideDiv(button_id);
		}
	}
}
		
	
function switchDiv(div_id)
{
  var style_sheet = getStyleObject(div_id);
  if (style_sheet)
  {
    hideAll();
    changeObjectVisibility(div_id, "visible");
  }
}

function switchPhoto(photo_id, spritepos, vid_id) {
	var style_sheet = getStyleObject(photo_id);
	if (style_sheet) {
		switch (spritepos) {
			case 0:
				if (vid_id) { showDivDisplay(vid_id); }
				break;
			case 1:
				if (vid_id) { hideDivDisplay(vid_id); }
				changeObjectBg(photo_id, "0 0");
				break;
			case 2:
				if (vid_id) { hideDivDisplay(vid_id); }
				changeObjectBg(photo_id, "0 -155px");
				break;
			case 3:
				if (vid_id) { hideDivDisplay(vid_id); }
				changeObjectBg(photo_id, "0 -310px");
				break;
			case 4:
				if (vid_id) { hideDivDisplay(vid_id); }
				changeObjectBg(photo_id, "0 -465px");
				break;
			case 5:
				if (vid_id) { hideDivDisplay(vid_id); }
				changeObjectBg(photo_id, "0 -620px");
				break;
		}
	}
}