function centrar()
{
	
	init();
	ad();
	
	document.getElementById("siderbar").style.width = 165;
	if ( this.isIE ) {
		
		document.getElementById("sider").style.pixelLeft = GetRelativeLeft(document.getElementById("siderbar"));
		
	}
		
	else {
		document.getElementById("sider").style.left = GetRelativeLeft(document.getElementById("siderbar"));
	}
	
	
	    
	
	
};



function GetRelativeLeft(obj)
{
	try
	{
		if(obj == null)
			return 0;
		return obj.offsetLeft + this.GetRelativeLeft(obj.offsetParent);
	} 
	catch (ex)
	{
		//alert("Bug GetRelativeLeft\n" + ex.message);
	}
}

/////////////////////////////////



	<!--
	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);
	//-->

window.onresize = centrar; 
function init(){
	naveg = new browser2();
	if(naveg.ie || naveg.opera){
		//alert(window.screenLeft)
		block = document.all["sider"].style;
		block.left = (window.screen.availWidth-parseInt(block.width)-33)
		//block.left = (document.body.clientWidth-parseInt(block.width))-document.body.scrollLeft - 10;
	} else if (naveg.ns4){
		block = document.layers["sider"];
		//block.left = (window.screen.availWidth-33)-142
		//block.left = (window.innerWidth-100)-window.pageXOffset - 70;
	} else if (naveg.ns6){
		block = document.getElementById("sider").style;
		//block.left = (window.screen.availWidth-parseInt(block.width)-30)
		//block.left = (document.body.clientWidth-parseInt(block.width))-window.pageXOffset - 12;
	}
	a = 0;
}

	function ad(){
		if(naveg.ie || naveg.opera){
			posY = document.body.scrollTop;
		} else if (naveg.ns){
			posY = window.pageYOffset;
		} else if (naveg.ns6){
			posY = window.pageYOffset;
		}
		if((posY % 2) !== 0) posY-=1;
		if(posY+12 != parseInt(block.top)){
			for(i=0; i<10; i++){
			
			if (posY <= 235) {
				
				a = 235;
				
				
			} else {
				
				if (posY > parseInt(block.top)) { a+= 2; 
				
				} else { 
				a-=2;
				}
				
			}
				
				block.top = a;
				
				
			}
			
			status = (posY+235) + ' ' + a + ' ' + parseInt(block.top);
		}
		setTimeout("ad()",10);
	}