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Discussione: Trascinamento Livello

  1. #1

    Trascinamento Livello

    Ho creato un livello , ci ho messo dentro una tabella con una immagine di sfondo e del testo e con dreamweaver ho messo all'evento onMouseDown sul livello il codice per trascinarlo (generato sempre con dreamweaver).. il problema è che quando vado nella pagina a trascinarlo , scompare l'immagine di sfondo della tabella , mentre il testo rimane visibile.. c'è un modo per risolvere questo problema?

  2. #2
    Moderatore di JavaScript L'avatar di br1
    Registrato dal
    Jul 1999
    Messaggi
    19,998
    Posta il codice... quanto da te descritto si puo' ottenere in una infinita' di modi diversi... e fare la diagnosi senza vedere il paziente non e' proprio possibile.

    ciao
    Il guaio per i poveri computers e' che sono gli uomini a comandarli.

    Attenzione ai titoli delle discussioni: (ri)leggete il regolamento
    Consultate la discussione in rilievo: script / discussioni utili
    Usate la funzione di Ricerca del Forum

  3. #3
    questo è lo script aggiunto da dreamweaver:

    <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_dragLayer(objName,x,hL,hT,hW,hH,toFront,dropBac k,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=d ocument.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.leftNS6)?parseInt(curDrag.style.left):curDrag.style.pi xelLeft;
    if (String(curLeft)=="NaN") curLeft=0; curDrag.MM_startL = curLeft;
    curTop = (NS4)?curDrag.topNS6)?parseInt(curDrag.style.top):curDrag.style.pix elTop;
    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.MOUSE UP);
    } 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.zIndexarseInt(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)+parent L)+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 ffsetWidth);
    var tmpH = MM_hHeight; if (tmpH <= 0) tmpH += ((NS4)?clip.heightffsetHeight);
    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.leftNS6)?parseInt(curDrag.style.left):curDrag.style.pi xelLeft;
    curTop = (NS4)?curDrag.topNS6)?parseInt(curDrag.style.top):curDrag.style.pix elTop;
    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=docume nt.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)?leftNS6)?parseInt(style.left):style.pixelLeft),2)+
    Math.pow(MM_targT-((NS4)?topNS6)?parseInt(style.top):style.pixelTop),2))<=MM_t ol) {
    if (NS4) {left = MM_targL; top = MM_targT;}
    else if (NS6) {style.left = MM_targL; style.top = MM_targT;}
    else {style.pixelLeft = MM_targL; style.pixelTop = MM_targT;}
    MM_SNAPPED = true; MM_LEFTRIGHT = MM_startL-MM_targL; MM_UPDOWN = MM_startT-MM_targT; }
    if (MM_everyTime || MM_SNAPPED) eval(MM_dropJS);
    if(MM_dropBack) {if (NS4) zIndex = MM_oldZ; else style.zIndex = MM_oldZ;}
    retVal = false; if(!NS) event.returnValue = false; }
    document.MM_curDrag = null;
    }
    if (NS) document.routeEvent(objName);
    } return retVal;
    }
    //-->
    </script>


    e questo è l'inizio della tabella:

    <div class="Livello" id="LayerCompany" style="position:absolute; width:326px; height:217px; z-index:10; left: 237px; top: 10px; visibility:hidden;" >
    <table width="326" class="Livello" height="217" border="0" cellspacing="0" cellpadding="0" background="Immagini/livello.gif">
    <tr class="primaRiga" onMouseDown="MM_dragLayer('LayerCompany','',0,0,0, 0,true,false,-1,-1,-1,-1,false,false,0,'',false,'')" >

  4. #4
    ok, ho risolto mettendo come immagine invece che come sfondo ed aggiungendovi un livello sopra in cui ho messo il testo.....grazie comunque

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