| 207 | } |
| 208 | |
| 209 | function useDataImageAsBackground(slideContainer) { |
| 210 | var slideDiv = slideContainer.firstChild; |
| 211 | if (slideDiv.hasAttribute("data-background-image")) { |
| 212 | slideContainer.style.backgroundImage = |
| 213 | 'url("' + slideDiv.getAttribute("data-background-image") + '")'; |
| 214 | slideDiv.classList.add("imageText"); |
| 215 | } else { |
| 216 | slideContainer.style.backgroundImage = ""; |
| 217 | slideContainer.style.backgroundColor = slideDiv.style.backgroundColor; |
| 218 | } |
| 219 | } |
| 220 | |
| 221 | /** |
| 222 | * The central navigation method: given a slide number, it goes to that slide |