老外写的一个ASP.NET聊天室

/* Nifty Corners Cube - rounded corners with CSS and Javascript Copyright 2006 Alessandro Fulciniti (a.fulciniti@html.it) This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ var niftyOk=(document.getElementById && document.createElement && Array.prototype.push); var niftyCss=false; String.prototype.find=function(what){ return(this.indexOf(what)>=0 ? true : false); } var oldonload=window.onload; if(typeof(NiftyLoad)!='function') NiftyLoad=function(){}; if(typeof(oldonload)=='function') window.onload=function(){oldonload();AddCss();NiftyLoad()}; else window.onload=function(){AddCss();NiftyLoad()}; function AddCss(){ niftyCss=true; var l=CreateEl("link"); l.setAttribute("type","text/css"); l.setAttribute("rel","stylesheet"); l.setAttribute("href","niftyCorners.css"); l.setAttribute("media","screen"); document.getElementsByTagName("head")[0].appendChild(l); } function Nifty(selector,options){ if(niftyOk==false) return; if(niftyCss==false) AddCss(); var i,v=selector.split(","),h=0; if(options==null) options=""; if(options.find("fixed-height")) h=getElementsBySelector(v[0])[0].offsetHeight; for(i=0;i<v.length;i++) Rounded(v[i],options); if(options.find("height")) SameHeight(selector,h); } function Rounded(selector,options){ var i,top="",bottom="",v=new Array(); if(options!=""){ options=options.replace("left","tl bl"); options=options.replace("right","tr br"); options=options.replace("top","tr tl"); options=options.replace("bottom","br bl"); options=options.replace("transparent","alias"); if(options.find("tl")){ top="both"; if(!options.find("tr")) top="left"; } else if(options.find("tr")) top="right"; if(options.find("bl")){ bottom="both"; if(!options.find("br")) bottom="left"; } else if(options.find("br")) bottom="right"; } if(top=="" && bottom=="" && !options.find("none")){top="both";bottom="both";} v=getElementsBySelector(selector); for(i=0;i<v.length;i++){ FixIE(v[i]); if(top!="") AddTop(v[i],top,options); if(bottom!="") AddBottom(v[i],bottom,options); } } function AddTop(el,side,options){ var d=CreateEl("b"),lim=4,border="",p,i,btype="r",bk,color; d.style.marginLeft="-"+getPadding(el,"Left")+"px"; d.style.marginRight="-"+getPadding(el,"Right")+"px"; if(options.find("alias") || (color=getBk(el))=="transparent"){ color="transparent";bk="transparent"; border=getParentBk(el);btype="t"; } else{ bk=getParentBk(el); border=Mix(color,bk); } d.style.background=bk; d.className="niftycorners"; p=getPadding(el,"Top"); if(options.find("small")){ d.style.marginBottom=(p-2)+"px"; btype+="s"; lim=2; } else if(options.find("big")){ d.style.marginBottom=(p-10)+"px"; btype+="b"; lim=8; } else d.style.marginBottom=(p-5)+"px"; for(i=1;i<=lim;i++) d.appendChild(CreateStrip(i,side,color,border,btype)); el.style.paddingTop="0"; el.insertBefore(d,el.firstChild); } function AddBottom(el,side,options){ var d=CreateEl("b"),lim=4,border="",p,i,btype="r",bk,color; d.style.marginLeft="-"+getPadding(el,"Left")+"px"; d.style.marginRight="-"+getPadding(el,"Right")+"px"; if(options.find("alias") || (color=getBk(el))=="transparent"){ color="transparent";bk="transparent"; border=getParentBk(el);btype="t"; } else{ bk=getParentBk(el); border=Mix(color,bk); } d.style.background=bk; d.className="niftycorners"; p=getPadding(el,"Bottom"); if(options.find("small")){ d.style.marginTop=(p-2)+"px"; btype+="s"; lim=2; } else if(options.find("big")){ d.style.marginTop=(p-10)+"px"; btype+="b"; lim=8; } else d.style.marginTop=(p-5)+"px"; for(i=lim;i>0;i--) d.appendChild(CreateStrip(i,side,color,border,btype)); el.style.paddingBottom=0; el.appendChild(d); } function CreateStrip(index,side,color,border,btype){ var x=CreateEl("b"); x.className=btype+index; x.style.backgroundColor=color; x.style.borderColor=border; if(side=="left"){ x.style.borderRightWidth="0"; x.style.marginRight="0"; } else if(side=="right"){ x.style.borderLeftWidth="0"; x.style.marginLeft="0"; } return(x); } function CreateEl(x){ return(document.createElement(x)); } function FixIE(el){ if(el.currentStyle!=null && el.currentStyle.hasLayout!=null && el.currentStyle.hasLayout==false) el.style.display="inline-block"; } function SameHeight(selector,maxh){ var i,v=selector.split(","),t,j,els=[],gap; for(i=0;i<v.length;i++){ t=getElementsBySelector(v[i]); els=els.concat(t); } for(i=0;i<els.length;i++){ if(els[i].offsetHeight>maxh) maxh=els[i].offsetHeight; els[i].style.height="auto"; } for(i=0;i<els.length;i++){ gap=maxh-els[i].offsetHeight; if(gap>0){ t=CreateEl("b");t.className="niftyfill";t.style.height=gap+"px"; nc=els[i].lastChild; if(nc.className=="niftycorners") els[i].insertBefore(t,nc); else els[i].appendChild(t); } } } function getElementsBySelector(selector){ var i,j,selid="",selclass="",tag=selector,tag2="",v2,k,f,a,s=[],objlist=[],c; if(selector.find("#")){ //id selector like "tag#id" if(selector.find(" ")){ //descendant selector like "tag#id tag" s=selector.split(" "); var fs=s[0].split("#"); if(fs.length==1) return(objlist); f=document.getElementById(fs[1]); if(f){ v=f.getElementsByTagName(s[1]); for(i=0;i<v.length;i++) objlist.push(v[i]); } return(objlist); } else{ s=selector.split("#"); tag=s[0]; selid=s[1]; if(selid!=""){ f=document.getElementById(selid); if(f) objlist.push(f); return(objlist); } } } if(selector.find(".")){ //class selector like "tag.class" s=selector.split("."); tag=s[0]; selclass=s[1]; if(selclass.find(" ")){ //descendant selector like tag1.classname tag2 s=selclass.split(" "); selclass=s[0]; tag2=s[1]; } } var v=document.getElementsByTagName(tag); // tag selector like "tag" if(selclass==""){ for(i=0;i<v.length;i++) objlist.push(v[i]); return(objlist); } for(i=0;i<v.length;i++){ c=v[i].className.split(" "); for(j=0;j<c.length;j++){ if(c[j]==selclass){ if(tag2=="") objlist.push(v[i]); else{ v2=v[i].getElementsByTagName(tag2); for(k=0;k<v2.length;k++) objlist.push(v2[k]); } } } } return(objlist); } function getParentBk(x){ var el=x.parentNode,c; while(el.tagName.toUpperCase()!="HTML" && (c=getBk(el))=="transparent") el=el.parentNode; if(c=="transparent") c="#FFFFFF"; return(c); } function getBk(x){ var c=getStyleProp(x,"backgroundColor"); if(c==null || c=="transparent" || c.find("rgba(0, 0, 0, 0)")) return("transparent"); if(c.find("rgb")) c=rgb2hex(c); return(c); } function getPadding(x,side){ var p=getStyleProp(x,"padding"+side); if(p==null || !p.find("px")) return(0); return(parseInt(p)); } function getStyleProp(x,prop){ i