Displays content in a modal window (popup)

the allowed types are: inline, iframe, image, video, ajax
syntax 1 : {up modal=popup content | label=link text}
syntax 2 : {up modal=empty,'html','images' or content | label=text link}content{/up popup}
so empty or 'html': the content of the popup is the code between the shortcodes
so'img': each image of the code between the shortcodes will be a popup
otherwise the value of the parameter is analyzed to determine its type
- video vimeo, youtube or dailymotion {up popup=//youtu.be/H9fa9aWFbLM}
- single image if {up popup=images/xx.jpg} or png, ...
- inline block if block id {up popup=#block}
- iframe if url {up popup=//lomart.fr} or {up popup=doc/xx.pdf} or {up popup=?index/...}
we can force the type by type=inline, iframe, image, video, ajax