var initialised; 
var bw;
var speed=50 ;
var loop, timer ;

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 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;
    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){ 
	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 PerformScroll(speed){ 
	if(initialised){ 
		loop=true; 
		if(speed>0){
			objScroller.down(speed);
		}else{
			objScroller.up(speed);
		}
	}else{
		alert('Espere a que la página se despliegue totalmente');
	}
} 
 
function CeaseScroll(){ 
    loop=false;
    if(timer) {
		clearTimeout(timer);
	}
} 

function InitialiseScrollableArea(){ 
	var Timer;
    objContainer=new ConstructObject('divContainer');
	
    objScroller=new ConstructObject('divContent','divContainer');
    objScroller.MoveArea(0,0);
    objContainer.css.visibility='visible';
    initialised=true; 
//	Timer = window.setTimeout('InitialiseScrollableArea()',500);
//	alert('chau');
} 
// end absolutely positioned scrollable area object scripts 

function PutImage(LayerName, ImageName, ImagePath){
	var ob;
	var cadeval;
	if(LayerName != 0){ 

		cadeval = LayerRef+'["' +LayerName+ '"].document.images["'+ImageName+'"]';
		ob = eval(cadeval);
	}else{
	  	cadeval = 'document.images["'+ImageName+'"]';	
		ob = eval(cadeval);
	 }
	 ob.src = ImagePath;
}

function CeaseScroll(){ 
    loop=false;
    if(timer) {
		clearTimeout(timer);
	}
}