// JavaScript Document
t=0;
function whoIs(){
	app = navigator.appName;
	idx = navigator.appVersion.indexOf(".");
	if ( idx != -1 ){
		st = navigator.appVersion.substring(0,idx);
			if ( st >=4 ){
				if(app=="Netscape"){
					if(window.pageYOffset<document.getElementById("h").offsetTop-document.getElementById('father').offsetTop-57)
						document.getElementById('bup').style.top=t+window.pageYOffset;
						}
					else if( app == "Microsoft Internet Explorer" ){
						if(document.body.scrollTop<(document.getElementById("h").offsetTop-document.getElementById('father').offsetTop)-57)
						document.getElementById('bup').style.top=t+document.body.scrollTop;
					}
			}
				}
}
function Init()	{
	document.body.onscroll=whoIs;
}