rem: if(window.innerHeight) return window.innerHeight; if(typeof window.document.documentElement.clientHeight=="number") return window.document.documentElement.clientHeight; return window.document.body.clientHeight; 
add: if(window.innerHeight) return window.innerHeight; if(typeof window.document.documentElement.clientHeight=="number") return window.document.documentElement.clientHeight; return window.document.body.clientHeight; 
context: function getViewportHeight() {if(window.innerHeight)return window.innerHeight;if(typeof window.document.documentElement.clientHeight=="number")return window.document.documentElement.clientHeight;return window.document.body.clientHeight;}
meta: 1064	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1064/4880f3147da22d14ddf434b5fe14f30342a93ec6/viewport.js/clean/lib/tabs/viewport.js