常用的JS特效代码集锦

<title>中国站长站</title> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <script language="JavaScript" type="text/JavaScript"> <!-- function MM_reloadPage(init) { //reloads the window if Nav4 resized if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) { document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }} else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload(); } MM_reloadPage(true); function MM_findObj(n, d) { //v4.01 var p,i,x; if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) { d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);} if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n]; for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document); if(!x && d.getElementById) x=d.getElementById(n); return x; } function MM_showHideLayers() { //v6.0 var i,p,v,obj,args=MM_showHideLayers.arguments; for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2]; if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; } obj.visibility=v; } } function MM_dragLayer(objName,x,hL,hT,hW,hH,toFront,dropBack,cU,cD,cL,cR,targL,targT,tol,dropJS,et,dragJS) { //v4.01 //Copyright 1998 Macromedia, Inc. All rights reserved. var i,j,aLayer,retVal,curDrag=null,curLeft,curTop,IE=document.all,NS4=document.layers; var NS6=(!IE&&document.getElementById), NS=(NS4||NS6); if (!IE && !NS) return false; retVal = true; if(IE && event) event.returnValue = true; if (MM_dragLayer.arguments.length > 1) { curDrag = MM_findObj(objName); if (!curDrag) return false; if (!document.allLayers) { document.allLayers = new Array(); with (document) if (NS4) { for (i=0; i<layers.length; i++) allLayers[i]=layers[i]; for (i=0; i<allLayers.length; i++) if (allLayers[i].document && allLayers[i].document.layers) with (allLayers[i].document) for (j=0; j<layers.length; j++) allLayers[allLayers.length]=layers[j]; } else { if (NS6) { var spns = getElementsByTagName("span"); var all = getElementsByTagName("div"); for (i=0;i<spns.length;i++) if (spns[i].style&&spns[i].style.position) allLayers[allLayers.length]=spns[i];} for (i=0;i<all.length;i++) if (all[i].style&&all[i].style.position) allLayers[allLayers.length]=all[i]; } } curDrag.MM_dragOk=true; curDrag.MM_targL=targL; curDrag.MM_targT=targT; curDrag.MM_tol=Math.pow(tol,2); curDrag.MM_hLeft=hL; curDrag.MM_hTop=hT; curDrag.MM_hWidth=hW; curDrag.MM_hHeight=hH; curDrag.MM_toFront=toFront; curDrag.MM_dropBack=dropBack; curDrag.MM_dropJS=dropJS; curDrag.MM_everyTime=et; curDrag.MM_dragJS=dragJS; curDrag.MM_oldZ = (NS4)?curDrag.zIndex:curDrag.style.zIndex; curLeft= (NS4)?curDrag.left:(NS6)?parseInt(curDrag.style.left):curDrag.style.pixelLeft; if (String(curLeft)=="NaN") curLeft=0; curDrag.MM_startL = curLeft; curTop = (NS4)?curDrag.top:(NS6)?parseInt(curDrag.style.top):curDrag.style.pixelTop; if (String(curTop)=="NaN") curTop=0; curDrag.MM_startT = curTop; curDrag.MM_bL=(cL<0)?null:curLeft-cL; curDrag.MM_bT=(cU<0)?null:curTop-cU; curDrag.MM_bR=(cR<0)?null:curLeft+cR; curDrag.MM_bB=(cD<0)?null:curTop+cD; curDrag.MM_LEFTRIGHT=0; curDrag.MM_UPDOWN=0; curDrag.MM_SNAPPED=false; //use in your JS! document.onmousedown = MM_dragLayer; document.onmouseup = MM_dragLayer; if (NS) document.captureEvents(Event.MOUSEDOWN|Event.MOUSEUP); } else { var theEvent = ((NS)?objName.type:event.type); if (theEvent == 'mousedown') { var mouseX = (NS)?objName.pageX : event.clientX + document.body.scrollLeft; var mouseY = (NS)?objName.pageY : event.clientY + document.body.scrollTop; var maxDragZ=null; document.MM_maxZ = 0; for (i=0; i<document.allLayers.length; i++) { aLayer = document.allLayers[i]; var aLayerZ = (NS4)?aLayer.zIndex:parseInt(aLayer.style.zIndex); if (aLayerZ > document.MM_maxZ) document.MM_maxZ = aLayerZ; var isVisible = (((NS4)?aLayer.visibility:aLayer.style.visibility).indexOf('hid') == -1); if (aLayer.MM_dragOk != null && isVisible) with (aLayer) { var parentL=0; var parentT=0; if (NS6) { parentLayer = aLayer.parentNode; while (parentLayer != null && parentLayer.style.position) { parentL += parseInt(parentLayer.offsetLeft); parentT += parseInt(parentLayer.offsetTop); parentLayer = parentLayer.parentNode; } } else if (IE) { parentLayer = aLayer.parentElement; while (parentLayer != null && parentLayer.style.position) { parentL += parentLayer.offsetLeft; parentT += parentLayer.offsetTop; parentLayer = parentLayer.parentElement; } } var tmpX=mouseX-(((NS4)?pageX:((NS6)?parseInt(style.left):style.pixelLeft)+parentL)+MM_hLeft); var tmpY=mouseY-(((NS4)?pageY:((NS6)?parseInt(style.top):style.pixelTop) +parentT)+MM_hTop); if (String(tmpX)=="NaN") tmpX=0; if (String(tmpY)=="NaN") tmpY=0; var tmpW = MM_hWidth; if (tmpW <= 0) tmpW += ((NS4)?clip.width :offsetWidth); var tmpH = MM_hHeight; if (tmpH <= 0) tmpH += ((NS4)?clip.height:offsetHeight); if ((0 <= tmpX && tmpX < tmpW && 0 <= tmpY && tmpY < tmpH) && (maxDragZ == null || maxDragZ <= aLayerZ)) { curDrag = aLayer; maxDragZ = aLayerZ; } } } if (curDrag) { document.onmousemove = MM_dragLayer; if (NS4) document.captureEvents(Event.MOUSEMOVE); curLeft = (NS4)?curDrag.left:(NS6)?parseInt(curDrag.style.left):curDrag.style.pixelLeft; curTop = (NS4)?curDrag.top:(NS6)?parseInt(curDrag.style.top):curDrag.style.pixelTop; if (String(curLeft)=="NaN") curLeft=0; if (String(curTop)=="NaN") curTop=0; MM_oldX = mouseX - curLeft; MM_oldY = mouseY - curTop; document.MM_curDrag = curDrag; curDrag.MM_SNAPPED=false; if(curDrag.MM_toFront) { eval('curDrag.'+((NS4)?'':'style.')+'zIndex=document.MM_maxZ+1'); if (!curDrag.MM_dropBack) document.MM_maxZ++; } retVal = false; if(!NS4&&!NS6) event.returnValue = false; } } else if (theEvent == 'mousemove') { if (document.MM_curDrag) with (document.MM_curDrag) { var mouseX = (NS)?objName.pageX : event.clientX + document.body.scrollLeft; var mouseY = (NS)?objName.pageY : event.clientY + document.body.scrollTop; newLeft = mouseX-MM_oldX; newTop = mouseY-MM_oldY; if (MM_bL!=null) newLeft = Math.max(newLeft,MM_bL); if (MM_bR!=null) newLeft = Math.min(newLeft,MM_bR); if (MM_bT!=null) newTop = Math.max(newTop ,MM_bT); if (MM_bB!=null) newTop = Math.min(newTop ,MM_bB); MM_LEFTRIGHT = newLeft-MM_startL; MM_UPDOWN = newTop-MM_startT; if (NS4) {left = newLeft; top = newTop;} else if (NS6){style.left = newLeft; style.top = newTop;} else {style.pixelLeft = newLeft; style.pixelTop = newTop;} if (MM_dragJS) eval(MM_dragJS); retVal = false; if(!NS) event.returnValue = false; } } else if (theEvent == 'mouseup') { document.onmousemove = null; if (NS) document.releaseEvents(Event.MOUSEMOVE); if (NS) document.captureEvents(Event.MOUSEDOWN); //for mac NS if (document.MM_curDrag) with (document.MM_curDrag) { if (typeof MM_targL =='number' && typeof MM_targT == 'number' && (Math.pow(MM_targL-((NS4)?left:(NS6)?parseInt(style.left):style.pixelLeft),2)+ Math.pow(MM_targT-((NS4)?top:(NS6)?parseInt(style.top):style.pixelTop),2))<=MM_tol) { if (NS4) {left = MM_targL; top = MM_targT;} else if (NS6) {style.left = MM_targL; style.top = MM_targT;}