rem: if(typeof window.pageYOffset=="number") return window.pageYOffset; if(document.documentElement.scrollTop) return Math.max(document.documentElement.scrollTop,document.body.scrollTop); else if(document.body.scrollTop!=null) return document.body.scrollTop; return 0; 
add: if(typeof window.pageYOffset=="number") return window.pageYOffset; if(document.documentElement.scrollTop) return Math.max(document.documentElement.scrollTop,document.body.scrollTop); else if(document.body.scrollTop!=null) return document.body.scrollTop; return 0; 
context: function getScrollTop(){if(typeof window.pageYOffset=="number")return window.pageYOffset;if(document.documentElement.scrollTop)return Math.max(document.documentElement.scrollTop,document.body.scrollTop);else if(document.body.scrollTop!=null)return document.body.scrollTop;return 0;}
meta: 1064	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1064/a955c322e9f35d1e6e0a183d4b3058214f72aa3f/viewport.js/buggy/tiki/lib/tabs/viewport.js