$.fn.mergeattributes = function(src){
	if($.browser.msie) {
		$(this).get(0).mergeattributes(src.get(0));
	}else{
		attrs = src.get(0).attributes;
		i = attrs.length - 1;
		for(;i>=0;i--){
			var name = attrs[i].name;
			if(name.tolowercase() === 'id' || attrs[i].value=="" || attrs[i].value==null ||attrs[i].value=="null"){
				continue;
			}
			try{
				$(this).attr(name,attrs[i].value);
			}catch(e){
			}
		}
	}
}
$.fn.frozentable = function(irowhead,irowfoot,icolleft){//3,0,1
	var otable = $(this);
	var otableid = otable.attr("id");
	var odiv = $(this).parent();
	if(odiv.get(0).tagname != "div") return;
	otable.find("td").attr("nowrap","nowrap");
	//otable.css("table-layout","fixed");
 
    if (otable.width() > odiv.width() && otable.height() > odiv.height()) {
		if(irowhead>0 && icolleft>0){
			var oclonetable = $("<table id='otablelh_"+otableid+"'></table>");//������������к��н����ı�ͷ
			odiv.parent().append(oclonetable);
			oclonetable.clonetable(otable,0,irowhead,icolleft);
			oclonetable.css("position","absolute");
			oclonetable.css("z-index","1004");
			oclonetable.css("left",odiv.offset().left);
			oclonetable.css("border-bottom-style",'none');
            oclonetable.css("border-top-style", 'none');
			oclonetable.css("top",odiv.offset().top);
		}
		if(irowfoot>0 && icolleft>0){
			var oclonetable = $("<table id='otablelf_"+otableid+"'></table>");	
			odiv.parent().append(oclonetable);
			oclonetable.clonetable(otable,otable.find("tr").length-irowfoot,otable.find("tr").length,icolleft);
			oclonetable.css("position","absolute");
			oclonetable.css("z-index","1003");
			oclonetable.css("left",odiv.offset().left);
			oclonetable.css("top",(odiv.offset().top+odiv.outerheight(true)-oclonetable.outerheight(true)-17));
		}
	}
    if (irowhead > 0 && otable.height() > odiv.height()) {
		var oclonediv = $("<div id='odivh_"+otableid+"'><table></table></div>");
		odiv.parent().append(oclonediv);
		oclonediv.find("table").clonetable(otable,0,irowhead,-1);
		oclonediv.css("overflow","hidden");
		oclonediv.css("width",odiv.outerwidth(true)-17);
		oclonediv.css("position","absolute");
		oclonediv.css("z-index","1002");
		oclonediv.css("left",odiv.offset().left);
		oclonediv.css("top",odiv.offset().top);
	}
    if (irowfoot > 0 && otable.height() > odiv.height()) {
		var oclonediv = $("<div id='odivf_"+otableid+"'><table></table></div>");
		odiv.parent().append(oclonediv);
		oclonediv.find("table").clonetable(otable,otable.find("tr").length-irowfoot,otable.find("tr").length,-1);
		oclonediv.css("overflow","hidden");
		oclonediv.css("width",odiv.outerwidth(true)-17);
		oclonediv.css("position","absolute");
		oclonediv.css("z-index","1001");
		oclonediv.css("left",odiv.offset().left);
		oclonediv.css("top",odiv.offset().top+odiv.outerheight(true)-oclonetable.outerheight(true)-17);
	}
    if (icolleft > 0 && otable.width() > odiv.width()) {
		var oclonediv = $("<div id='odivl_"+otableid+"'><table></table></div>");
		odiv.parent().append(oclonediv);
		oclonediv.find("table").clonetable(otable,0,otable.find("tr").length,icolleft);
		oclonediv.css("overflow","hidden");
		oclonediv.css("height",odiv.outerheight(true)-17);
		oclonediv.css("position","absolute");
		oclonediv.css("z-index","1000");
        //oclonediv.css("left", odiv.offset().left);//ע�͵�ɽ����������
		oclonediv.css("top",odiv.offset().top);
	}
	odiv.scroll(function(){
		if(typeof($("#odivh_"+otableid).get(0))!='undefined'){
			$("#odivh_"+otableid).scrollleft($(this).scrollleft());
		}
		if(typeof($("#odivf_"+otableid).get(0))!='undefined'){
			$("#odivf_"+otableid).scrollleft($(this).scrollleft());
		}
		if(typeof($("#odivl_"+otableid).get(0))!='undefined'){
			$("#odivl_"+otableid).scrolltop($(this).scrolltop());
		}
	});
};
$.fn.clonetable = function(osrctable,irowstart,irowend,icolumnend){
	var iwidth = 0,iheight = 0;
	$(this).mergeattributes(osrctable);
	var log="";
	var rowspanvalue = 0;
	var rownumber = 0;
	var rowindex;
	for(var i=irowstart;i<irowend;i++){
		var oldtr = osrctable.find("tr").eq(i);
		var issinglerowspan = false;
		var rowspancount = 0;
		var colcount = 0;
		var colnumber = 0;
		for(var j=0; j<(icolumnend==-1?oldtr.find("td").length:icolumnend); j++){
			var oidtd = oldtr.find("td").eq(j);
			colnumber++;
			var colspan = oidtd.attr("colspan");
			if (typeof(colspan)=="undefined" || colspan==1) { 
			   colcount += 1;
			}else{
			   colcount += colspan;
			}  
			var rowspan = oidtd.attr("rowspan");
			if(typeof(rowspan)!="undefined" && rowspan!=1){
				rowspancount++;
				rowindex = i;
				rowspanvalue = rowspan;
				rownumber = rowspancount;
			}
			if(colcount>=icolumnend && icolumnend!=-1){
				break;
			}
		} 
		log +=i+"=="+rowindex+"="+rowspancount+"="+rownumber+"="+rowspanvalue+"<br>";
		if(i>rowindex && i<=(rowindex+rowspanvalue-1) && icolumnend!=-1){
			if(rownumber!=0 && icolumnend==rownumber){
				issinglerowspan = true;
			}else{
				colnumber -= 1;
				if(rowspancount==0){
					colnumber -= (rownumber-1);
				}
			}
		}
		if(colnumber!=0){
			var newtr = $("<tr></tr>");
			newtr.mergeattributes(oldtr);
			var jwidth = 0;
			iheight += oldtr.outerheight(true);
			for(var j=0; j<colnumber;j++){
				if(issinglerowspan){
					continue;
				}
				var oidtd = oldtr.find("td").eq(j);
				var newtd = oidtd.clone();
				
				/*ie һ�ж��кϲ�ʱ
				if(icolumnend==-1 && irowstart!=0 && $.browser.msie){
					if (typeof(newtd.attr("colspan"))!="undefined" && newtd.attr("colspan")!=1) { 
						alert(newtd.text()+"==2=="+newtd.attr("colspan")+"---"+colcount);
					}  
				}
				if(icolumnend==-1 && irowstart!=0 && j==1){
				    newtd.width(oidtd.outerwidth(true)-1);
					jwidth += (oidtd.outerwidth(true)-1);
				}else{
					newtd.width(oidtd.outerwidth(true));
					jwidth += oidtd.outerwidth(true);
				}*/
 
				newtd.height(oidtd.outerheight(true)-1);
				newtd.width(oidtd.outerwidth(true));
				jwidth += oidtd.outerwidth(true);
				iwidth = math.max(iwidth,jwidth);
				newtr.append(newtd);
			}
			$(this).append(newtr);
		}
	}
	$(this).width(iwidth);
	$(this).height(iheight);
}