// JavaScript Document
function caculate_total()
{
	sydk_caculate();
	gjjdk_caculate();
	xfdk_caculate();
	
}
function caculate_check()
{
     if (document.loan.sydk_je.value==""&&document.loan.gjjdk_je.value==""&&document.loan.xfdk_je.value=="")
	   {   
			alert("商业贷款或者公积金贷款或者消费贷款\n至少必须输入一项才能进行计算！");
			document.loan.sydk_je.focus();
			return false;
	   }
	//商业贷款校验
	if(document.loan.sydk_je.value!=''){
		if(String(parseFloat(document.loan.sydk_je.value))=="NaN"){
			alert("商业贷款金额不正确！");
			document.loan.sydk_je.focus();
			return false;
		}
		if(document.loan.sydk_qx.value!=''){
			if(String(parseFloat(document.loan.sydk_qx.value))=="NaN"){
				alert("商业贷款期限不正确！");
				document.loan.sydk_qx.focus();
				return false;
			}
			if(parseFloat(document.loan.sydk_qx_y.value)>30){
				alert("商业贷款期限不能超过30年！");
				document.loan.sydk_qx_y.focus();
				return false;
			}
		}
		else{
			alert("您还没有输入商业贷款期限！");
			document.loan.sydk_qx.focus();
			return false;
		}
		//form1.loana.value=form1.loana_input.value;
	}
	//else{
		//form1.loana.value=0;
		//form1.year1.value='';
	//}
	//公积金贷款校验
	if(document.loan.gjjdk_je.value!=''){
		if(String(parseFloat(document.loan.gjjdk_je.value))=="NaN"){
			alert("公积金贷款金额不正确！");
			document.loan.gjjdk_je.focus();
			return false;
		}
		if(document.loan.gjjdk_qx.value!=''){
			if(String(parseFloat(document.loan.gjjdk_qx.value))=="NaN"){
				alert("公积金贷款期限不正确！");
				document.loan.gjjdk_qx.focus();
				return false;
			}
			if(parseFloat(document.loan.gjjdk_qx_y.value)>30){
				alert("公积金贷款期限不能超过30年！");
				document.loan.gjjdk_qx_y.focus();
				return false;
			}
		}
		else{
			alert("您还没有输入公积金贷款期限！");
			document.loan.gjjdk_qx.focus();
			return false;
		}
		//form1.loanb.value=form1.loanb_input.value;
	}
	//else{
		//form1.loanb.value=0;
		//form1.year2.value='';
	//}
	//消费贷款校验
	if(document.loan.xfdk_je.value!=''){
		if(String(parseFloat(document.loan.xfdk_je.value))=="NaN"){
			alert("消费贷款金额不正确！");
			document.loan.xfdk_je.focus();
			return false;
		}
		if(document.loan.xfdk_qx.value!=''){
			if(String(parseFloat(document.loan.xfdk_qx.value))=="NaN"){
				alert("消费贷款期限不正确！");
				document.loan.xfdk_qx.focus();
				return false;
			}
			if(parseFloat(document.loan.xfdk_qx_y.value)>10){
				alert("消费贷款期限不能超过10年！");
				document.loan.xfdk_qx_y.focus();
				return false;
			}
		}
		else{
			alert("您还没有输入消费贷款期限！");
			document.loan.xfdk_qx.focus();
			return false;
		}
		//form1.loanc.value=form1.loanc_input.value;
	}
	//else{
		//form1.loanc.value=0;
		//form1.year3.value='';
	//}
	
}
function give_sydk_rate_value()
{
	document.loan.sydk_qx.value=document.loan.sydk_qx_y.value*12;
	if (document.loan.sydk_qx_y.value*12<=60)
	{
		//document.loan.sydk_rate.value=3.975;
		document.loan.sydk_rate.value=4.125;
	}
	else if(document.loan.sydk_qx_y.value*12>60)
	{
		//document.loan.sydk_rate.value=4.200;
		//document.loan.sydk_rate.value=4.425;
		//document.loan.sydk_rate.value=4.591666667;
		document.loan.sydk_rate.value=5.1;
	}
}
function give_gjjdk_rate_value()
{
	document.loan.gjjdk_qx.value=document.loan.gjjdk_qx_y.value*12;
	if (document.loan.gjjdk_qx_y.value*12<=60)
	{
		//document.loan.gjjdk_rate.value=3.000;
		document.loan.gjjdk_rate.value=3.150;
	}
	else if(document.loan.gjjdk_qx_y.value*12>60)
	{
		//document.loan.gjjdk_rate.value=3.375;
		document.loan.gjjdk_rate.value=3.525;
	}
}
function give_xfdk_rate_value()
{
	document.loan.xfdk_qx.value=document.loan.xfdk_qx_y.value*12;
	if (document.loan.xfdk_qx_y.value*12<=12)
	{
		//document.loan.xfdk_rate.value=4.425;
		document.loan.xfdk_rate.value=4.650;
	}
	else if(document.loan.xfdk_qx_y.value*12>12&&document.loan.xfdk_qx_y.value*12<=36)
	{
		//document.loan.xfdk_rate.value=4.575;
		document.loan.xfdk_rate.value=4.800;
	}
	else if(document.loan.xfdk_qx_y.value*12>36&&document.loan.xfdk_qx_y.value*12<=60)
	{
		//document.loan.xfdk_rate.value=4.650;
		document.loan.xfdk_rate.value=4.875;
	}
	else if(document.loan.xfdk_qx_y.value*12>60&&document.loan.xfdk_qx_y.value*12<=120)
	{
		//document.loan.xfdk_rate.value=4.800;
		document.loan.xfdk_rate.value=5.100;
	}
}
function sydk_caculate()
{
	document.loan.sydk_a1.value=(Math.pow((1+document.loan.sydk_rate.value/1000),document.loan.sydk_qx.value)-1);
	document.loan.sydk_a2.value=10000*(document.loan.sydk_rate.value/1000);
	document.loan.sydk_a3.value=document.loan.sydk_a2.value*1+(document.loan.sydk_a2.value/document.loan.sydk_a1.value)*1;
	//document.loan.sydk_f1.value=Math.pow((),());
}
function gjjdk_caculate()
{
	document.loan.gjjdk_a1.value=(Math.pow((1+document.loan.gjjdk_rate.value/1000),document.loan.gjjdk_qx.value)-1);
	document.loan.gjjdk_a2.value=10000*(document.loan.gjjdk_rate.value/1000);
	document.loan.gjjdk_a3.value=document.loan.gjjdk_a2.value*1+(document.loan.gjjdk_a2.value/document.loan.gjjdk_a1.value)*1;
}
function xfdk_caculate()
{
	document.loan.xfdk_a1.value=(Math.pow((1+document.loan.xfdk_rate.value/1000),document.loan.xfdk_qx.value)-1);
	document.loan.xfdk_a2.value=10000*(document.loan.xfdk_rate.value/1000);
	document.loan.xfdk_a3.value=document.loan.xfdk_a2.value*1+(document.loan.xfdk_a2.value/document.loan.xfdk_a1.value)*1;
}