/** * @pre the tag allready exists */ function include(x) { if(x) { var s = document.createElement('script'); s.type="text/javascript"; s.src=x; if( typeof document.head == 'undefined') document.head = document.getElementsByTagName('head')[0]; document.head.appendChild(s); } } function empty($x) { return typeof($x)=='undefined' || !$x; } /** * check if an element o is of class x */ function attr_match($o,$attr,$x,$isRegExp) { if(empty($o) || empty($o[$attr])) return false; //alert($o[$attr]+"\n"+$x);//debug if(typeof $isRegExp!=='undefined' && $isRegExp) return $o[$attr].match(new RegExp($x)); return $o[$attr].match(new RegExp('(^|\\s)'+$x+'(\\s|$)')); } /** * @return next sibling (optionally specific nodename) or null if no next sibling exists */ function nextSibling($o,$nodeName) { if(typeof $nodeName == 'undefined') return $o.nextSibling; $nodeName = $nodeName.toLowerCase(); $o = $o.nextSibling; while($o) { if($o.nodeName.toLowerCase()==$nodeName) return $o; $o = $o.nextSibling; } return null; } function byClass() { var $x='',$t='*',$o=document,$i=0,$c,$n,$y=[]; if(arguments[1]) $o=arguments[1]; if(arguments[0]) $x=arguments[0].replace(/$(\.)|(\.)^/,''); if(($i=$x.indexOf('.'))>-1) { $t=$x.substr(0,$i); $x=$x.substr($i+1); } $c=$o.getElementsByTagName($t); $n=$c.length; $i=-1; while(++$i<$n) { if($c[$i].className && $c[$i].className.match(new RegExp('(\\s|^)('+$x+')(\\s|$)'))) { $y.push($c[$i]); } } return $y; } /** * @return x,y,dx,dy */ function posdim($e) { var $x=0; var $y=0; var $w=$e.offsetWidth; var $h=$e.offsetHeight; if($e.offsetParent) { do { $x += $e.offsetLeft; $y += $e.offsetTop; } while ($e = $e.offsetParent); } return new Array($x,$y,$w,$h); } function addEvent($o, $type, $f, $useCapture) { //todo add cleanup and caching if($o.addEventListener) { $o.addEventListener($type, $f, $useCapture); return true; } else if($o.attachEvent) { var r = $o.attachEvent('on' + $type, $f); return r; } $o['on' + $type] = $f; return true; } function firstElementOf($x) { if($x.children.length) { var $c=$x.firstChild; while($c.nodeType!=1) { if($c.nextSibling) { $c=$c.nextSibling; } else { return null;//no elements } } return $c; } return null;//no children }