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- Number.prototype.toFixed=function(j){var h=this+"";if(!j){j=0}if(h.indexOf(".")==-1){h+="."}h+=new Array(j+1).join("0");if(new RegExp("^(-|\\+)?(\\d+(\\.\\d{0,"+(j+1)+"})?)\\d*$").test(h)){var h="0"+RegExp.$2,g=RegExp.$1,e=RegExp.$3.length,c=true;if(e==j+2){e=h.match(/\d/g);if(parseInt(e[e.length-1])>4){for(var f=e.length-2;f>=0;f--){e[f]=parseInt(e[f])+1;if(e[f]==10){e[f]=0;c=f!=1}else{break}}}h=e.join("").replace(new RegExp("(\\d+)(\\d{"+j+"})\\d$"),"$1.$2")}if(c){h=h.substr(1)}return(g+h).replace(/\.$/,"")}return this+""};var CalcEvalMin=function(){};CalcEvalMin.prototype.eval=function(str){var isRetStr=str.match(new RegExp(/^".+"$/g))!=null;if(isRetStr==true){str=str.replace(/^"|"$/g,"")}var bracketsList=this.matchOutBrackets(str);for(var i=0; i<bracketsList.length; i++){var newCalc=bracketsList[i];var calcStr=this.eval(newCalc.str.replace(/^\(|\)$/g,""));str=str.replace(newCalc.str,calcStr)}var errorObj=new Array();while(1){var multObj=this.matchExp(str,"/");if(multObj==null){break}var v=this.executeDivi(multObj.firstValue,multObj.secondValue);if(v=="NaN"){var t="T"+new Date().getTime();errorObj.push({Name:t,Exp:multObj.str});str=str.replace(multObj.str,t)}else{str=str.replace(multObj.str,v)}}while(1){var multObj=this.matchExp(str,"*");if(multObj==null){break}var v=this.executeMult(multObj.firstValue,multObj.secondValue);if(v=="NaN"){var t="T"+new Date().getTime();errorObj.push({Name:t,Exp:multObj.str});str=str.replace(multObj.str,t)}else{str=str.replace(multObj.str,v)}}while(1){var multObj=this.matchExp(str,"+");if(multObj==null){break}var v=this.executeAddi(multObj.firstValue,multObj.secondValue);if(v=="NaN"||isNaN(v)){var t="T"+new Date().getTime();errorObj.push({Name:t,Exp:multObj.str});str=str.replace(multObj.str,t)}else{str=str.replace(multObj.str,v)}}while(1){var multObj=this.matchExp(str,"-");if(multObj==null){break}var v=this.executeSubt(multObj.firstValue,multObj.secondValue);if(v=="NaN"){var t="T"+new Date().getTime();errorObj.push({Name:t,Exp:multObj.str});str=str.replace(multObj.str,t)}else{str=str.replace(multObj.str,v)}}for(var i=errorObj.length-1; i>=0; i--){var ex=errorObj[i];str=str.replace(ex.Name,ex.Exp)}while(1){var multObj=str.match(/\d*={2,3}\d*/g);if(multObj==null){break}var v=eval(multObj[0]);str=str.replace(multObj[0],v)}if(isRetStr==true){try{return eval('"'+str+'"')}catch(e){}try{return eval(str)}catch(e){}return str}if(str.match(/(^true$)|(^false$)/g)){return str==="true"}if(!isNaN(Number(str))){return Number(str)}try{return eval(str)}catch(e){}return str};CalcEvalMin.prototype.matchOutBrackets=function(f){var h=new Array();if(f==null){return h}if(typeof f!="string"){f=f+""}var d=f.split("");var a=0;var g=false;var b=-1;for(var c=0; c<d.length; c++){if(d[c]=="("){a++;g=true;if(b==-1){b=c}}if(d[c]==")"){a--}if(g==true&&a==0){var e=new Object();e.str=f.substring(b,c+1);e.firstIndex=b;e.lastIndex=c+1;h.push(e);b=-1;g=false;a=0}}return h};CalcEvalMin.prototype.matchExp=function(l, f){var j=null;if(l==null){return retList}if(typeof l!="string"){l=l+""}var k=l.split("");var c=0;var b=0;var g="";var e="";var a="";var d=false;for(var h=0; h<=k.length; h++){if(k[h]=="+"||k[h]=="-"||k[h]=="*"||k[h]=="/"||k[h]=="%"||h==k.length){if(a==""&&k[h]=="-"){a+=k[h];continue}if(d==true){e=a;b=h;j=new Object();j.firstIndex=c;j.secondIndex=b;j.str=l.substring(c,b);j.firstValue=Number(g);j.secondValue=Number(e);break}if(k[h]==null){break}if(k[h]==f){d=true;g=a;a=""}else{a="";c=-1}}else{a+=k[h];if(c==-1){c=h}}}return j};CalcEvalMin.prototype.executeMult=function(d, b){var a=0,f=d.toString(),c=b.toString();try{a+=f.split(".")[1].length}catch(g){}try{a+=c.split(".")[1].length}catch(g){}return Number(f.replace(".",""))*Number(c.replace(".",""))/Math.pow(10,a)};CalcEvalMin.prototype.executeDivi=function(arg1, arg2){var t1=0,t2=0,r1,r2;try{t1=arg1.toString().split(".")[1].length}catch(e){}try{t2=arg2.toString().split(".")[1].length}catch(e){}with(Math){r1=Number(arg1.toString().replace(".",""));r2=Number(arg2.toString().replace(".",""));return this.executeMult(r1/r2,pow(10,t2-t1))}};CalcEvalMin.prototype.executeAddi=function(arg1, arg2){var r1,r2,m;try{r1=arg1.toString().split(".")[1].length}catch(e){r1=0}try{r2=arg2.toString().split(".")[1].length}catch(e){r2=0}m=Math.pow(10,Math.max(r1,r2));return(this.eval(arg1+"*"+m)+this.eval(arg2+"*"+m))/m};CalcEvalMin.prototype.executeSubt=function(arg1, arg2){var r1,r2,m,n;try{r1=arg1.toString().split(".")[1].length}catch(e){r1=0}try{r2=arg2.toString().split(".")[1].length}catch(e){r2=0}m=Math.pow(10,Math.max(r1,r2));n=(r1>=r2)?r1:r2;return((this.eval(arg1+"*"+m)-this.eval(arg2+"*"+m))/m).toFixed(n)};
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