_grabObj=null;
function EventCtrl(div){
this.div=div;
this.type='';this.mask=0;
this.pageX=0;this.pageY=0;}
EventCtrl.prototype.linkCtrl=function(obj){
if(obj&&!obj.eventCtrl)obj.eventCtrl=this;
return this;}
EventCtrl.prototype.setThreshold=function(threshold){
this.threshold=threshold;
return this;}
function getCtrlFromElementIE(el,tagName){
for(;el;el=el.parentElement)
if((tagName==null||el.tagName==tagName)&&el.eventCtrl)
return el.eventCtrl;
return null;}
function getCtrlFromEventIE(e,tagName){
var ctrl=_grabObj;
var event=window.event;
var fromCtrl,toCtrl;
if(ctrl==null){
var mask=0,type=event.type;
switch(type){
case 'mouseover':
fromCtrl=getCtrlFromElementIE(event.fromElement,tagName);
toCtrl=getCtrlFromElementIE(event.toElement,tagName);
if(fromCtrl!=toCtrl)ctrl=toCtrl;
if(!ctrl||(ctrl.mask&1)==0)ctrl=null;
break;
case 'mouseout':
fromCtrl=getCtrlFromElementIE(event.fromElement,tagName);
toCtrl=getCtrlFromElementIE(event.toElement,tagName);
if(fromCtrl!=toCtrl)ctrl=fromCtrl;
if(!ctrl||(ctrl.mask&1)==0)ctrl=null;
break;
case 'mousedown':
case 'mousemove':
case 'mouseup':
ctrl=getCtrlFromElementIE(event.srcElement,tagName);
if(ctrl&&(ctrl.mask&2)!=0)break;
default:ctrl=null;break;}}
if(ctrl){
ctrl.pageX=document.body.scrollLeft+event.clientX;
ctrl.pageY=document.body.scrollTop+event.clientY;
ctrl.type=event.type;}
return ctrl;}
function getCtrlFromEventNN4(e,tagName){
var ctrl=_grabObj;
if(ctrl==null)ctrl=e.target.eventCtrl;
if(ctrl){
var mask=0;
switch(e.type){
case 'mouseover':case 'mouseout':
mask|=1;break;
case 'mousedown':case 'mousemove':case 'mouseup':
mask|=2;break;}
if((ctrl.mask&mask)!=0){
ctrl.pageX=e.pageX;ctrl.pageY=e.pageY;
ctrl.type=e.type;}else ctrl=null;}
return ctrl;}
function getCtrlFromEventMz(e,tagName){
var ctrl=_grabObj;
if(ctrl==null){
for(var t=e.target;t!=null;t=t.parentNode){
if((tagName==null||(t.nodeType==Node.ELEMENT_NODE&&t.tagName==tagName))&&('undefined'!=typeof(t.eventCtrl))){
ctrl=t.eventCtrl;
break;}}}
if(ctrl){
ctrl.pageX=e.clientX+window.scrollX;
ctrl.pageY=e.clientY+window.scrollY;
ctrl.type=e.type;}
return ctrl;}
function getCtrlFromEventNop(e,tagName){return null;}
getCtrlFromEvent=(_dom==1||_dom==2)?getCtrlFromEventIE:(_dom==3?getCtrlFromEventNN4:(_dom==4?getCtrlFromEventMz:
getCtrlFromEventNop));
function ech_mouseover(e){
var ctrl=getCtrlFromEvent(e,null);
if(ctrl&&ctrl.mouseover&&!ctrl.mouseoverState){
ctrl.mouseoverState=true;
if(ctrl.mouseover)ctrl.mouseover(ctrl,ctrl.mouseoverClient);}}
function ech_mouseout(e){
var ctrl=getCtrlFromEvent(e,null);
if(ctrl&&ctrl.mouseover&&ctrl.mouseoverState){
ctrl.mouseoverState=false;
if(ctrl.mouseout)ctrl.mouseout(ctrl,ctrl.mouseoutClient);}}
function ech_mousedown(e){
var ctrl=getCtrlFromEvent(e,null);
if(ctrl&&!ctrl.dragging){
_grabObj=ctrl;ctrl.dragging=true;ctrl.dragged=false;
ctrl.startX=ctrl.curX=ctrl.pageX;
ctrl.startY=ctrl.curY=ctrl.pageY;
if(ctrl.mousedown)ctrl.mousedown(ctrl,ctrl.mousedownClient);
return false;}
return true;}
function ech_mousemove(e){
var ctrl=getCtrlFromEvent(e,null);
if(ctrl&&ctrl.dragging){
if(ctrl.curX!=ctrl.pageX||ctrl.curY!=ctrl.pageY){
if(Math.abs(ctrl.pageX-ctrl.startX)>ctrl.threshold||Math.abs(ctrl.pageY-ctrl.startY)>ctrl.threshold)
ctrl.dragged=true;
if(ctrl.mousemove)ctrl.mousemove(ctrl,ctrl.mousemoveClient);
ctrl.curX=ctrl.pageX;ctrl.curY=ctrl.pageY;}
return false;}
return true;}
function ech_mouseup(e){
var ctrl=getCtrlFromEvent(e,null);
if(ctrl&&ctrl.dragging){
_grabObj=null;ctrl.dragging=false;
if(ctrl.mouseup)ctrl.mouseup(ctrl,ctrl.mouseupClient);
if(!ctrl.dragged&&ctrl.mouseclick)
ctrl.mouseclick(ctrl,ctrl.mouseclickClient);
ctrl.curX=ctrl.pageX;ctrl.curY=ctrl.pageY;
return false;}
return true;}
function ech_attachMouseOverOut(div,ovrf,ovrc,outf,outc){
if(!div.eventCtrl)div.eventCtrl=new EventCtrl(div);
var ctrl=div.eventCtrl;
ctrl.mouseoverState=false;
ctrl.mouseover=ovrf;ctrl.mouseoverClient=ovrc;
ctrl.mouseout=outf;ctrl.mouseoutClient=outc;
div.onmouseover=ech_mouseover;
div.onmouseout=ech_mouseout;
ctrl.mask|=1;
return ctrl;}
function ech_detachMouseOverOut(div){
var ctrl=div.eventCtrl;
if(ctrl){
ctrl.div.onmouseover=null;
ctrl.div.onmouseout=null;
ctrl.mask=~1;}}
function ech_attachMouseDrag(div,dwnf,dwnc,movf,movc,upf,upc,clkf,clkc){
var doc;
if(_dom==1||_dom==2){
doc=div;
doc.onmousedown=ech_mousedown;
document.onmousemove=ech_mousemove;
document.onmouseup=ech_mouseup;}else if(_dom==3){
doc=div.document;
doc.onmousedown=ech_mousedown;
doc.onmousemove=ech_mousemove;
doc.onmouseup=ech_mouseup;
doc.captureEvents(Event.MOUSEDOWN|Event.MOUSEMOVE|Event.MOUSEUP);}else if(_dom==4){
doc=div;
div.onmousedown=ech_mousedown;
document.body.onmousemove=ech_mousemove;
document.body.onmouseup=ech_mouseup;}else return null;
if(!doc.eventCtrl)doc.eventCtrl=new EventCtrl(div);
var ctrl=doc.eventCtrl;
ctrl.dragging=false;ctrl.dragged=false;
ctrl.startX=0;ctrl.startY=0;
ctrl.curX=0;ctrl.curY=0;
ctrl.mousedown=dwnf;ctrl.mousedownClient=dwnc;
ctrl.mousemove=movf;ctrl.mousemoveClient=movc;
ctrl.mouseup=upf;ctrl.mouseupClient=upc;
ctrl.mouseclick=clkf;ctrl.mouseclickClient=clkc;
ctrl.threshold=5;
ctrl.mask|=2;
return ctrl;}
function ech_detachMouseDrag(div){
var ctrl=null;
if(_dom==1||_dom==2){
ctrl=div.eventCtrl;
if(ctrl)ctrl.div.onmousedown=null;}else if(_dom==3){
ctrl=div.document.eventCtrl;
if(ctrl){
var doc=ctrl.div.document;
doc.releaseEvents(Event.MOUSEDOWN|Event.MOUSEMOVE|Event.MOUSEUP);
doc.onmousedown=null;
doc.onmousemove=null;
doc.onmouseup=null;}}else if(_dom==4){
ctrl=div.eventCtrl;
if(ctrl)ctrl.div.onmousedown=null;}
if(ctrl)ctrl.mask&=~2;}