function CollapseMenu(x,y,width,numBlocks,name) {
 this.name = (name!=null)? name : "CollapseMenu"+(CollapseMenu.count++)
 this.x = x
 this.y = y
 this.w = width
 this.numBlocks = numBlocks
 this.bgColor = '#ffffff'
 this.openStyle = "slide"  // or glide or move
 this.contentIndent = 0
 this.inc = 5
 this.speed = 20
 this.active = false
 this.obj = this.name + "Object"
 eval(this.obj + "=this")
 this.build = CollapseMenuBuild
 this.activate = CollapseMenuActivate
 this.toggle = CollapseMenuToggle
 this.open = CollapseMenuOpen
 this.close = CollapseMenuClose
 this.finish = CollapseMenuFinish
 this.onToggle = new Function()
}
function CollapseMenuBuild() {
 this.css = css(this.name,this.x,this.y,this.w,0)
 for (var i=0;i<this.numBlocks;i++) {
  this.css += css(this.name+'Block'+i,0,0,this.w)
  this.css += css(this.name+'Block'+i+'Item',0,0,this.w,null,this.bgColor)
  this.css += css(this.name+'Block'+i+'Content',0,0,this.w,null,this.bgColor,null,null,'margin-left:'+this.contentIndent)
 }
 this.css += css(this.name+'Block'+this.numBlocks,0,0,this.w,0,this.bgColor)
 this.divStart = '<div id="'+this.name+'">'
 this.divEnd = ''
 this.divEnd += '<div id="'+this.name+'Block'+this.numBlocks+'"></div>'
 for (var i=0;i<this.numBlocks;i++) {
  this.divEnd += '</div>'
 }
 this.divEnd += '</div>'
}
function CollapseMenuActivate() {
 this.lyr = new DynLayer(this.name)
 this.blocks = new Array()
 this.itemTotal = 0
 this.contentTotal = 0
 for (var i=0;i<this.numBlocks;i++) {
  this.blocks[i] = new Object()
  this.blocks[i].open = false
  this.blocks[i].lyr = new DynLayer(this.name+'Block'+i)
  this.blocks[i].itemlyr = new DynLayer(this.name+'Block'+i+'Item')
  this.blocks[i].itemHeight = this.blocks[i].itemlyr.getContentHeight()
  this.itemTotal += this.blocks[i].itemHeight
  this.blocks[i].itemlyr.clipTo(0,this.w,this.blocks[i].itemHeight,0)

  this.blocks[i].contentlyr = new DynLayer(this.name+'Block'+i+'Content')
  this.blocks[i].contentHeight = this.blocks[i].contentlyr.getContentHeight()
  this.contentTotal += this.blocks[i].contentHeight

  this.blocks[i].contentlyr.clipTo(0,this.w,this.blocks[i].contentHeight,0)
  this.blocks[i].contentlyr.moveTo(null,this.blocks[i].itemHeight)
  if (i!=0) this.blocks[i].lyr.moveTo(null,this.blocks[i-1].itemHeight)
  this.blocks[i].h = this.blocks[i].itemHeight + this.blocks[i].contentHeight
 }
 this.h = this.contentTotal + this.itemTotal
 for (var i=this.numBlocks-1;i>=0;i--) {
  this.blocks[i].lyr.clipInit()
  this.blocks[i].lyr.clipTo(0,this.w,this.h-this.blocks[i].lyr.y,0)
 }
 this.blocks[this.numBlocks] = new Object()
 this.blocks[this.numBlocks].lyr = new DynLayer(this.name+'Block'+this.numBlocks)
 this.blocks[this.numBlocks].lyr.clipTo(0,this.w,this.h-this.itemTotal,0)
 this.blocks[this.numBlocks].lyr.css.height = this.h-this.itemTotal
 this.blocks[this.numBlocks].lyr.moveTo(null,this.blocks[this.numBlocks-1].itemHeight)
 this.lyr.clipTo(0,this.w,this.h,0)
}
function CollapseMenuToggle(i) {
if (this.active) return

 this.active = true
 if (!this.blocks[i].open) {
    for (var j=0;j<this.numBlocks;j++) {
              if (j == i)
                 this.open(i)
              else
                 this.close(j);
          }
      }
 else this.close(i)
}
function CollapseMenuOpen(i) {
 if (!this.blocks[i].open) {
  var h = this.blocks[i].contentHeight + this.blocks[i].itemHeight
  this.blocks[i].open = true
  if (this.openStyle == 'slide') this.blocks[i+1].lyr.slideTo(null,h,this.inc,this.speed,this.obj+'.finish()')
  else if (this.openStyle == 'glide') this.blocks[i+1].lyr.glideTo('slow','slow',null,h,this.inc,this.speed,this.obj+'.finish()')
  else if (this.openStyle == 'move') {this.blocks[i+1].lyr.moveTo(null,h); this.finish();}
 }
}
function CollapseMenuClose(i) {
 if (this.blocks[i].open) {
  var h = this.blocks[i].itemHeight
  this.blocks[i].open = false
  if (this.openStyle == 'slide') this.blocks[i+1].lyr.slideTo(null,h,this.inc,this.speed,this.obj+'.finish()')
  else if (this.openStyle == 'glide') this.blocks[i+1].lyr.glideTo('slow','slow',null,h,this.inc,this.speed,this.obj+'.finish()')
  else if (this.openStyle == 'move') {this.blocks[i+1].lyr.moveTo(null,h); this.finish();}
 }
}
function CollapseMenuFinish() {
 this.active = false
 this.onToggle()
}
CollapseMenu.count = 0