function CheckInputFile(radUpload, eventArgs)
{
	var image = GBI("imagePreview");
	if (image != null)
	{
		var selectedFileName = eventArgs.FileInputField.value.toLowerCase();
		//Get the selected file extension
		var selectedFileExt = selectedFileName.substring(selectedFileName.lastIndexOf(".") + 1);
		
		//Check if the selected file is image
		if (selectedFileExt == "gif" || selectedFileExt == "jpg" || selectedFileExt == "jpeg" || selectedFileExt == "png" || selectedFileExt == "bmp")
		{ 
			image.src = selectedFileName;  
			image.className = 'show';
		}
		else
		{ 
			image.src = "empty.gif";
			image.altText = 'No Image';
			eventArgs.FileInputField.value = '';
			alert(' Image file with extension : gif, jpg, jpeg, png, bmp only"');
			
			
			return false;
		}
	} 

}
function ResizeBy(by)
{
	switch(by)
	{
		case 'Width': GBI('td_resizebywidth').className='show';GBI('td_resizebyheight').className='hidden';break;
		case 'Height': GBI('td_resizebyheight').className='show';GBI('td_resizebywidth').className='hidden';break;
		case '1/2': GBI('td_resizebyheight').className='hidden';GBI('td_resizebywidth').className='hidden';break;
		case '1/3': GBI('td_resizebyheight').className='hidden';GBI('td_resizebywidth').className='hidden';break;
		case '1/4': GBI('td_resizebyheight').className='hidden';GBI('td_resizebywidth').className='hidden';break;
		case 'Specified': GBI('td_resizebyheight').className='show';GBI('td_resizebywidth').className='show';break;
		default: break;
	}
}