function ShowFinance(carprice,carDown,interest, menu1){
			var cprice=checkStr(carprice);
			var car = cprice*(menu1/100);
			var ttoal = cprice-car;
			var month12 = (((cprice-car)*(interest/100)*1)/12)+((cprice-car)/12);
			var month24 = (((cprice-car)*(interest/100)*2)/24)+((cprice-car)/24);
			var month36 = (((cprice-car)*(interest/100)*3)/36)+((cprice-car)/36);
			var month48 = (((cprice-car)*(interest/100)*4)/48)+((cprice-car)/48);
			var month60 = (((cprice-car)*(interest/100)*5)/60)+((cprice-car)/60);
			var month72 = (((cprice-car)*(interest/100)*6)/72)+((cprice-car)/72);
			
				document.form1.cprice.value=comma(cprice);
				document.form1.price_down.value=comma(car);
				document.getElementById('total').innerHTML=comma(ttoal);
				document.getElementById('12month').innerHTML=comma(month12);
				document.getElementById('24month').innerHTML=comma(month24);
				document.getElementById('36month').innerHTML=comma(month36);
				document.getElementById('48month').innerHTML=comma(month48);
				document.getElementById('60month').innerHTML=comma(month60);
				document.getElementById('72month').innerHTML=comma(month72);
		}
			function checkStr(str) {
			var num=str.replace(/\$|\,/g,'');
			if(num=="") {num="0";str.value=num;}
			return num;
		}
		
		function comma(num) {
			var point="";
				num = num.toString().replace(/\$|\,/g,'');
				if (num.indexOf(".")>0){
									var num1=num.split(".");
									num=num1[0];
									point="."+num1[1].substr(0,2)
				}
				if(isNaN(num) || num=="") num = "0";
				for (var i = 0; i < Math.floor((num.length-(1+i))/3); i++)
				num = num.substring(0,num.length-(4*i+3))+','+num.substring(num.length-(4*i+3));

				return (num+point);
			}