To make you easier in copying the script, always use "Highlight All' button to select the script, then use 'Ctrl C' to copy the script.
For newer post, click 'Highlight All' button, then click 'Copy to Clipboard' button. It's much easier!
Don't forget to paste to your text-editor such as notepad to customize the script so that it will suit your need. After customizing, you may paste the script safely to your blog or website. Also, read the instruction for each script to get the best result.