Ampliar un imagen haciendo click
El tamaño de imagen o el tamaño en que quieres que se mire: Width=200;this. height=130
El tamaño en miniatura: Width=100; this. height=80
HTML
<img onclick="javascript:this.width=130;this.height=180" ondblclick="javascript:this.width=600;this.height=100" src="http://www.picgifs.com/graphics/k/kawaii-scene/graphics-kawaii-scene-980230.gif"
width="100" alt="" />
/https%3A%2F%2Flh3.googleusercontent.com%2F-drj07eUI7IQ%2FWfshPpdTtLI%2FAAAAAAADOm4%2FTd99GxjOCOENdzzPzZLDN5FnnBj4D7NSgCJoC%2Fw320-h240-rw%2F17.gif)
/https%3A%2F%2Flh3.googleusercontent.com%2F-6eSJcfFteoM%2FWfsidlbFYVI%2FAAAAAAADOrE%2Fj2oNYgt8VzE4jsWh8vwdiBuDNlFKZlGMwCJoC%2Fw292-h468-rw%2F20a.gif)
/https%3A%2F%2Flh3.googleusercontent.com%2F-Z71wS6lOmNE%2FWfyAV46cGSI%2FAAAAAAADOxM%2FzuCej6ophBAa0HTDh4C7GzB-lh0h0fYTQCJoC%2Fw356-h555-rw%2F2.gif)
/https%3A%2F%2Flh3.googleusercontent.com%2F-GgWdAE3rGjI%2FWfyQTJujPRI%2FAAAAAAADO0w%2FJPSejYaMeFcu9oHRK1G1NLPYVRp9w30eACJoC%2Fw360-h540-rw%2F1.gif)