// position.js: make edge-positioning work on IE/Win // version 0.5, 15-Jul-2003 // written by Andrew Clover , use freely /*@cc_on // Disable for 5.8 (IE8 beta 2) because style.setExpression is unimplemented (though not NULL). @if (@_win32 && @_jscript_version>4 && @_jscript_version<5.8) var position_h= new Array(); var position_v= new Array(); var position_viewport; var position_width= 0; var position_height= 0; var position_fontsize= 0; var position_ARBITRARY= 200; // Binding. Called on each new element; if the it's , initialise script. // Check all new elements to see if they need our help, make lists of them function position_bind(el) { if (!position_viewport) { if (!document.body) return; // initialisation position_viewport= (document.compatMode=='CSS1Compat') ? document.documentElement : document.body; window.attachEvent('onresize', position_delayout); var em= document.createElement('div'); em.setAttribute('id', 'position_em'); em.style.position= 'absolute'; em.style.visibility= 'hidden'; em.style.fontSize= 'xx-large'; em.style.height= '5em'; em.style.top='-5em'; em.style.left= '0'; em.style.setExpression('width', 'position_checkFont()'); document.body.appendChild(em); } // check for absolute edge-positioned elements (ignore ones from fixed.js!) var st= el.style; var cs= el.currentStyle; if (cs.position=='absolute' && !st.fixedPWidth) { if (cs.left!='auto' && cs.right!='auto') { position_h[position_h.length]= el; st.position_width= position_ARBITRARY; st.width= st.position_width+'px'; position_delayout(); } if (cs.top!='auto' && cs.bottom!='auto') { position_v[position_v.length]= el; st.position_height= position_ARBITRARY; st.height= st.position_height+'px'; position_delayout(); } } } function position_checkFont() { position_delayout(); return '1em'; } // Layout. For each edge-positioned axis, measure difference between min-edge // and max-edge positioning, set size to the difference // Request re-layout at next available moment var position_delaying= false; function position_delayout() { if (position_delaying) return; position_delaying= true; window.setTimeout(position_layout, 0); } function position_layout() { position_delaying= false; var i, el, st, pos, tmp; var fs= document.all['position_em'].offsetWidth; var newfs= (position_fontsize!=fs && position_fontsize!=0); position_fontsize= fs; // horizontal axis if (position_viewport.clientWidth!=position_width || newfs) { position_width= position_viewport.clientWidth; for (i= position_h.length; i-->0;) { el= position_h[i]; st= el.style; cs= el.currentStyle; pos= el.offsetLeft; tmp= cs.left; st.left= 'auto'; st.position_width+= el.offsetLeft-pos; st.left= tmp; if (st.position_width<1) st.position_width= 1; st.width= st.position_width+'px'; } } // vertical axis if (position_viewport.clientHeight!=position_height || newfs) { position_height= position_viewport.clientHeight; for (i= position_v.length; i-->0;) { el= position_v[i]; st= el.style; cs= el.currentStyle; pos= el.offsetTop; tmp= cs.top; st.top= 'auto'; st.position_height+= el.offsetTop-pos; st.top= tmp; if (st.position_height<1) st.position_height= 1; st.height= st.position_height+'px'; } } } // Scanning. Check document every so often until it has finished loading. Do // nothing until arrives, then call main init. Pass any new elements // found on each scan to be bound var position_SCANDELAY= 500; var position_nscanned= 0; function position_scan() { var nall= document.all.length; for (var i= position_nscanned; i