getPaneItemCount not working in IE/ActiveX?

function ImageUploaderID_UploadFileCountChange()
{
	var getSize = "";
	var vWidth = "";
	var vHeight = "";
	var getImage = "";
	
	getImage = getImageUploader("ImageUploader").getPaneItemCount(1);
	
	vHeight = getImageUploader("ImageUploader").getUploadFileHeight(getImage);
	vWidth = getImageUploader("ImageUploader").getUploadFileWidth(getImage);
	if(vHeight < 360)
		getSize = getSize + "Image: " + i + " " + vHeight + "\n";
		
	var ratio = vWidth / vHeight;
	if(ratio < 2.0)
		getSize = "on";
	
	if(getSize)
	{
		var strText = "WARNING: The photo you have selected to upload is smaller than our recommended size or is not the correct aspect ratio. Images should be in a 2:1 aspect ratio and at least 720 pixels wide by 360 pixels high. \n\nYou may still add this image but it will result in poor quality and may not pan.";
		//var strText = getSize;
		alert(strText);
	}
}