var speed=50 
			var loop, timer
			var initialised
			
			bw=new verifyCompatibleBrowser()

			function verifyCompatibleBrowser(){ 
				this.ver=navigator.appVersion 
				this.dom=document.getElementById?1:0 
				this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom)?1:0; 
				this.ie4=(document.all && !this.dom)?1:0; 
				this.ns5=(this.dom && parseInt(this.ver) >= 5) ?1:0; 
			 
				this.ns4=(document.layers && !this.dom)?1:0; 
				this.bw=(this.ie5 || this.ie4 || this.ns4 || this.ns5) 
				return this 
			} 

			function InitialiseScrollableArea(){ 
				objContainer=new ConstructObject('divContainer') 
				objScroller=new ConstructObject('divContent','divContainer') 
				objScroller.MoveArea(0,0) 
				objContainer.css.visibility='visible' 
				initialised=true
			} 

			function ConstructObject(obj,nest){ 
				nest=(!nest) ? '':'document.'+nest+'.' 
				this.el=bw.dom?document.getElementById(obj):bw.ie4?document.all[obj]:bw.ns4?eval(nest+'document.'+obj):0; 
				this.css=bw.dom?document.getElementById(obj).style:bw.ie4?document.all[obj].style:bw.ns4?eval(nest+'document.'+obj):0; 
				this.scrollHeight=bw.ns4?this.css.document.height:this.el.offsetHeight 
				//alert(this.el.offsetHeight);
				this.clipHeight=bw.ns4?this.css.clip.height:this.el.offsetHeight 
				this.up=MoveAreaUp;this.down=MoveAreaDown; 
				this.MoveArea=MoveArea; this.x; this.y; 
				this.obj = obj + "Object" 
				eval(this.obj + "=this") 
				return this 
			} 

			function MoveArea(x,y){ 
				this.x=x;this.y=y 
				this.css.left=this.x 
				this.css.top=this.y 
			} 

			function MoveAreaDown(move){ 
				//alert(this.scrollHeight);
				if(this.y>-this.scrollHeight+objContainer.clipHeight){ 
					this.MoveArea(0,this.y-move)
					if(loop) setTimeout(this.obj+".down("+move+")",speed) 
				}
			}
			 
			function MoveAreaUp(move){ 
				if(this.y<0){ 
				this.MoveArea(0,this.y-move) 
				if(loop) setTimeout(this.obj+".up("+move+")",speed) 
				} 
			} 

			
			function cambio_Imagen (id,idGran,idpiso) {
				var oform
				var oImg
				oImg=eval('document.images["IMAGEN_GRANDE_'+idpiso+'"]')
				oImg.src= "../../images/apartments/detail/" + id			
				//alert(id);
			   oform=getFormCalcular()
				oImg=eval('oform.ID_IMAGEN_GRANDE_'+idpiso)
				oImg.value=idGran				
			}

			function getFormCalcular(){
				if (document.all) {
					return formCalculoPresupuesto
				} else {
					return document.forms.formCalculoPresupuesto
				}
			}
			
			function PerformScroll(speed){
				if(initialised){ 
					loop=true; 
					if(speed>0) objScroller.down(speed) 
					else objScroller.up(speed) 
				} 
			} 

			function CeaseScroll(){ 
				loop=false 
				if(timer) clearTimeout(timer) 
			} 
			
			function abrirVentana (idpiso){
			  var oform 
			  oform=getFormCalcular()
			  var oImg
			  oImg=eval('oform.ID_IMAGEN_GRANDE_'+idpiso)
			  img=oImg.value
			  window.open ("muestra_imagen.php?img="+ img,"imagen","scrollbars=NO,height=425,width=425,resizable=NO,status=NO,location=NO,directories=NO,menubar=NO")
			}