var RfData = [
						["Number", "SoilType", "MaxRainfall", "Minrainfall", "KValue", "TValue"],
						[1, "Pierre - Samsil", 40, 55, 0.37, 2.5],
						[2, "Bridgeport - Keith", 40, 55, 0.32, 5],
						[3, "Canyon - Rosebud", 50, 80, 0.3, 3],
						[4, "Keith - Rosebud", 40, 85, 0.3, 4],
						[5, "Anselmo - Keith", 50, 90, 0.3, 5],
						[6, "Mitchell - Tripp", 50, 75, 0.38, 5],
						[7, "Dunday - Valentine", 50, 130, 0.16, 5],
						[8, "Las - McCook", 60, 150, 0.35, 5],
						[9, "Coly - Keith", 75, 100, 0.38, 5],
						[10, "Holt - Valentine", 70, 90, 0.18, 4],
						[11, "Boyd - Reliance", 85, 125, 0.35, 3.5],
						[12, "Jansen - Thurman", 80, 115, 0.23, 4.5],
						[13, "Loup - Valentine", 90, 125, 0.18, 4],
						[14, "Thurman - Valentine", 115, 140, 0.16, 5],
						[15, "Crofton - Moody", 125, 160, 0.38, 5],
						[16, "Crofton - Nora", 125, 150, 0.38, 5],
						[17, "Coly - Ulysses", 80, 115, 0.38, 5],
						[18, "Hall - Wood River", 80, 135, 0.38, 3.5],
						[19, "Leshara - Platte", 125, 150, 0.3, 5],
						[20, "Marshall -Sharpsburg", 140, 200, 0.3, 5],
						[21, "Marshall - Monona", 150, 180, 0.28, 5],
						[22, "Hayne - Luton", 140, 200, 0.3, 5],
						[23, "Coly - Holdrege", 85, 150, 0.38, 5],
						[24, "Hastings - Holdrege", 110, 130, 0.32, 5],
						[25, "Holdrege - Kenesaw", 115, 135, 0.32, 5],
						[26, "Crete - Hastings", 125, 160, 0.35, 5],
						[27, "Sharpsburg - Shelby", 145, 155, 0.3, 5],
						[28, "Crete - Filmore", 130, 165, 0.37, 4],
						[29, "Crete - Wymore", 150, 175, 0.37, 4],
						[30, "Pawnee - Wymore", 160, 200, 0.35, 3],
						[31, "Hedville - Lancaster", 160, 170, 0.24, 2]
					];








var CData=[
["CropNumber,CropSystem",0,10,20,30,40,50,60,70,80,90],
[1,"Continious Corn or Sorghum",0.3,0.28,0.24,0.2,0.16,0.14,0.11,0.08,0.06,0.04],
[2,"-Soybean Rotation",0.35,0.32,0.28,0.25,0.21,0.18,0.14,0.11,0.07,0.04],
[3,"Continious Wheat",0.2,0.23,0.2,0.17,0.14,0.12,0.08,0.06,0.04,0.03],
[4,"Wheat after Fallow",0.2,0.21,0.19,0.17,0.14,0.12,0.08,0.06,0.04,0.03],
[5,"Corn/Sorghum after Wheat",0.3,0.28,0.26,0.2,0.16,0.14,0.11,0.08,0.06,0.04],
[6,"Continious Soybean",0.4,0.37,0.35,0.3,0.25,0.22,0.2,0.15,0.1,0.08],
[7,"Vegetables/Beets",0.3,0.28,0.24,0.2,0.16,0.14,0.11,0.08,0.06,0.04],
[8,"Grass and Legume mix",0.3,0.25,0.21,0.17,0.13,0.1,0.07,0.04,0.03,0.02],
[9,"AlfAlfa",0.3,0.29,0.25,0.21,0.17,0.13,0.09,0.05,0.03,0.02],
[10,"Bare Soil",1,1,1,1,1,1,1,1,1,1]
];









			//default P factor to 1
				$("#Results_PFactor").html(1);

//******************************************************* SELECCT AND SET SOIL FACTOR ***********************************************************
					$("#soilSelect").change(function() { 

						var v = $(this).val(); 
						$(".R-min").html(RfData[v][2]); 
						$(".R-max").html(RfData[v][3]);

						$(".KFactor_SoilType,.soilType").html(RfData[v][1]);
						$(".KFactor_KFactor,#Results_KFactor").html(RfData[v][4]);
						$(".KFactor_TValue,#Results_TolerableSoilLoss").html(RfData[v][5]);
                       
                        $("#soilTypeResult").html(RfData[v][1]);
					});




//******************************************************* USER SETS R-FACT (see RfData above) ****************************************************************
					$("#R-Factor-input").blur(function() {

						$(".KFactor_RFactor").html($(this).val());
                        $("#Results_RFactor").html($(this).val()); 
					});

			
//******************************************************* USER SETS LS FACTOR *********************************************************************************

					$(".ls-SlopeLength,.ls-SlopeSteepness").keyup(function() {

						if($(".ls-SlopeLength").val() != "" && $(".ls-SlopeSteepness").val() != "") {

							var l2 = $(".ls-SlopeSteepness").val();
							x = 0;
							if(l2 < 1) {

								x = 0.2;

							} else if(l2 >= 1 && l2 < 3) {

								x = 0.3;

							} else if(l2 >= 3 && l2 < 5) {

								x = 0.4;

							} else if(l2 >= 5) {

								x = 0.5;

							}

							var LS = Math.pow($(".ls-SlopeLength").val() / 72.6, x) * (0.0065 * Math.pow(l2, 2) + (0.0456 * l2) + 0.065);
							$("#ls-factor,#Results_LSFactor").html(LS.toFixed(4));

                     
                     $("#Results_SlopeLength").html($(".ls-SlopeLength").val());
                     $("#Results_SlopeSteepness").html($(".ls-SlopeSteepness").val());
						}
						 
					});
					


				
						
//******************************************************* CFACTOR SELECTION ***********************************************************
					$("#cFactor_CroppingSequenceSelect").change(function () {
						 		$("#Results_Crop").html($(this).find("option:selected").text());
	 							$("#cFactor_CropSystem").html($(this).find("option:selected").text());
								cxjsC();
						});
						
						
					$("#cFactor_TillageSelect").change(function () {  
						 
								$("#cFactor_TillageEffect").html($(this).find("option:selected").text());
								$("#cFactor_TillageEffectResult").html($(this).find("option:selected").attr("a-v"));		 

								//Populate residue values
								var cselect;
								if($(this).val()=="1"){

									cselect='<option value="0">--please choose-- </option><option value="5">30</option> <option value="6">40</option> <option value="7">50</option> <option value="8">60</option> <option value="9">70</option> <option value="10">80</option> <option value="11">90</option>';

								}else if($(this).val()=="2"){

										cselect='<option value="0">--please choose-- </option><option value="2">0</option> <option value="3">10</option>  <option value="4">20</option>  ';

								}else{

								cselect='<option value="0">--please choose-- </option><option value="2">0</option> <option value="3">10</option>  <option value="4">20</option> <option value="5">30</option> <option value="6">40</option> <option value="7">50</option> <option value="8">60</option> <option value="9">70</option> <option value="10">80</option> <option value="11">90</option>';
								}
								$("#cFactor_CoverSelect").html(cselect);				
								cxjsC();
						});	
						
						
					$("#cFactor_CoverSelect").change(function () {
						
							$("#cFactor_percentCover").html($(this).find("option:selected").text());
							$("#cFactor_result1").html(CData[$("#cFactor_CroppingSequenceSelect").val()][$(this).val()]);	
							$("#Results_Cover").html($(this).find("option:selected").text());
							cxjsC();
						});	
						
					$("#cFactor_YieldSelect").change(function () {
						
							$("#cFactor_ExpectedYield").html($(this).find("option:selected").text())	;
							$("#cFactor_ExpectedYieldResult").html($(this).val());
							cxjsC();
						});			
					
					$("#cFactor_PrevCropSelect").change(function () {
						
							$("#cFactor_PreviousCrop").html($(this).find("option:selected").text())	;
							$("#cFactor_PreviousCropResult").html($(this).val());	

							var c_fa=parseFloat($("#cFactor_result1").html())*parseFloat($("#cFactor_TillageEffectResult").html())*parseFloat($("#cFactor_ExpectedYieldResult").html())*parseFloat($("#cFactor_PreviousCropResult").html());

							console.log(parseFloat($("#cFactor_result1").html())+" ："+parseFloat($("#cFactor_TillageEffectResult").html())+" ："+parseFloat($("#cFactor_ExpectedYieldResult").html())+" ："+parseFloat($("#cFactor_PreviousCropResult").html())+" ：");

							$("#cFactor_AdjustedCFactor,#Results_CFactor").html(c_fa.toFixed(5));  //relust 选项显示C选项卡的结果
					
						});		
					
					function cxjsC () {
							$("#cFactor_PreviousCrop").html($("#cFactor_PrevCropSelect").find("option:selected").text())	;
							$("#cFactor_PreviousCropResult").html($("cFactor_PrevCropSelect").val());	

							var c_fa=parseFloat($("#cFactor_result1").html())*parseFloat($("#cFactor_TillageEffectResult").html())*parseFloat($("#cFactor_ExpectedYieldResult").html())*parseFloat($("#cFactor_PreviousCropResult").html());

							console.log(parseFloat($("#cFactor_result1").html())+" ："+parseFloat($("#cFactor_TillageEffectResult").html())+" ："+parseFloat($("#cFactor_ExpectedYieldResult").html())+" ："+parseFloat($("#cFactor_PreviousCropResult").html())+" ：");

							$("#cFactor_AdjustedCFactor,#Results_CFactor").html(c_fa.toFixed(5));
						
							if(isNaN(c_fa)){
								$("#cFactor_AdjustedCFactor,#Results_CFactor").html("---");
							}
						
						}
					
//******************************************************************** P FACTOR ADJUSTMENTS *************************************************************************	
             	
				$("#PFactor_PracticeSelection").change(function () {
								
						$("#Results_Practice,#pFactor_Practice").html($(this).find("option:selected").attr("v"));

					var slope=parseFloat($(".ls-SlopeSteepness").val());
					var pz="";

				 if($(this).val()=="0.8"){

						if(slope<2.5){
							pz=0.6;
						}else if(slope >= 2.5&& slope < 8.5){
							pz=0.5;

						}else if(slope >= 8.5&& slope < 12.5){
							pz=0.6;

						}else if(slope >= 12.5&& slope < 16.5){
							pz=0.7;

						}else if(slope >= 16.5&& slope < 20.5){
							pz=0.8;

						}else if(slope >= 20.5&& slope <=25){
							pz=0.9;

						}

					}else if($(this).val()=="0.4"){

								if(slope<2.5){
							pz=0.3;
							}else if(slope >= 2.5&& slope < 8.5){
								pz=0.25;

							}else if(slope >= 8.5&& slope < 12.5){
								pz=0.3;

							}else if(slope >= 12.5&& slope < 16.5){
								pz=0.35;

							}else if(slope >= 16.5&& slope < 20.5){
								pz=0.4;

							}else if(slope >= 20.5&& slope <=25){
								pz=0.45;

							}
						}
					else if ($(this).val() == "1"){
						pz = 1;
					}
					
					else {pz = 1;}

					$("#pFactor_PracticeFactor,#cFactor_PreviousCropResult").html(pz);
					$("#pFactor_Terraces,#pFactor_TerracesFactor").html("");
					$("#pFactor_AdjustedPFactor").html(1 * pz);
					
										});	

 
             $("#PFactor_TerraceSelection").change(function () {
						if($(this).val()=="1"){
						 $("#PFactor_TerraceInterval").html('<option >--please choose-- </option><option value="0.5"><110 ft - {33m}</option><option value="0.6">110-140 ft - {33-43m}</option><option value="0.7">140-180 ft - {43-55m}</option>	<option value="0.8">180-225 ft - {55-68m}</option>	<option value="0.9">225-330 ft - {68-100m}</option>	<option value="1">>300 ft - {100m}</option>');	
							
						}else if($(this).val()=="2"){
							 $("#PFactor_TerraceInterval").html('<option >--please choose-- </option><option value="0.7"><110 ft - {33m}</option><option value="0.8">110-140 ft - {33-43m}</option><option value="0.9">140-180 ft - {43-55m}</option>	<option value="0.9">180-225 ft - {55-68m}</option>	<option value="1">225-330 ft - {68-100m}</option>	<option value="1">>300 ft - {100m}</option>');	
						}else{

							$("#PFactor_TerraceInterval").html('<option >----</option>');
						}
					});	
 
        $("#PFactor_TerraceInterval").change(function () {
						$("#pFactor_Terraces").html($(this).find("option:selected").text());
						$("#pFactor_TerracesFactor").html($(this).val());
						var b=($(this).val()*parseFloat($("#pFactor_PracticeFactor").html()));
						$("#pFactor_AdjustedPFactor").html(b.toFixed(2));
						$("#Results_PFactor").html(b.toFixed(2));
					});

//******************************************************* CALCULATE RESULTS *******************************************************************

				$("#resultk").click(function () {
					
					//P-factor defaults to 1
					var pz=1;
					
					if(isNaN(parseFloat($("#pFactor_AdjustedPFactor").html()))){
						
							var pz=1;
					}else{
						
						pz=parseFloat($("#pFactor_AdjustedPFactor").html());
						
					}
					
					
					var a=parseFloat($("#R-Factor-input").val())*parseFloat($(".KFactor_KFactor").html())*parseFloat($("#ls-factor").html())*parseFloat($("#cFactor_AdjustedCFactor").html())*pz;
					
					if(isNaN(a)){
						
						$("#Results_PredictedSoilLoss").html("Please select variables to calculate value");
						
					}else{
					$("#Results_PredictedSoilLoss").html(a.toFixed(3) + " tons/acre");
					}
					console.log(parseFloat($("#R-Factor-input").val())+" : "+parseFloat($("#KFactor_TValue").html())+" : "+parseFloat($("#ls-factor").html())+" : "+parseFloat($("#cFactor_AdjustedCFactor").html())+" : "+parseFloat($("#pFactor_AdjustedPFactor").html()));
					
				})