var isNS4=0; var isAll=0; var isID=0;
var isNS = (navigator.appName == "Netscape") ? isNS=1 : isNS=0;
if (document.getElementById ) { isID = 1 }
else if (document.layers)  { isNS4 = 1 }
else if (document.all) { isAll = 1 };
//alert("isID = "+isID+" ; isNS4 = "+isNS4+" ; isAll = "+isAll);

function posPreced() {
	if (isID==1 && isNS==0) { // ie5, ie5.5, ie6
		document.getElementById('preced').style.left= document.body.scrollLeft;
		document.getElementById('preced').style.top= document.body.scrollTop+document.body.clientHeight-28;
	} else if (isID==1 && isNS==1) { //ns6
		document.getElementById('preced').style.left= pageXOffset;
		document.getElementById('preced').style.top= pageYOffset+innerHeight-30;	
	} else if (isAll==1) { // ie4
		document.all('preced').style.left=document.body.scrollLeft;
		document.all('preced').style.top=document.body.scrollTop+document.body.clientHeight-28;
	}  if (isNS4==1 ) { // ns4
		document.layers['preced'].left= pageXOffset;
		document.layers['preced'].top=pageYOffset+innerHeight-28;
	}
}
//setInterval("posPreced()", 100);