var focusflag = false;
						var Factor = new Array(47);
						Factor[0] = 1.012;
						Factor[1] = 1.030;
						Factor[2] = .3604;
						Factor[3] = .3604;
						Factor[4] = .3568;
						Factor[5] = .3568;
						Factor[6] = .3533;
						Factor[7] = .3498;
						Factor[8] = .3462;
						Factor[9] = .3427;
						Factor[10] = .3356;
						Factor[11] = .3392;
						Factor[12] = .3392;
						Factor[13] = .3462;
						Factor[14] = .3462;
						Factor[15] = .3568;
						Factor[16] = .3568;
						Factor[17] = .236;
						Factor[18] = 1.084;
						Factor[19] = 1;
						Factor[20] = .911;
						Factor[21] = 1.095;
						Factor[22] = 1.144;
						Factor[23] = 2.466;
						Factor[24] = 1.132;
						Factor[25] = 1.132;
						Factor[26] = 1.125;
						Factor[27] = 1.072;
						Factor[28] = 1.075;
						Factor[29] = 1.012;
						Factor[30] = 1.012;
						Factor[31] = 1.037;
						Factor[32] = 1.448;
						Factor[33] = .229;
						Factor[34] = 1.303;
						Factor[35] = 1.121;
						Factor[36] = 1.075;
						Factor[37] = 1.339;
						Factor[38] = 1.030;
						Factor[39] = 1.012;
						Factor[40] = 1.010;
						Factor[41] = 2.120;
						Factor[42] = .575;
						Factor[43] = 2.462;
						Factor[44] = .911;
						Factor[45] = .812;
										
						var RoundOff = 5;
				
				function UnitConvertI(value,type){
							
						
							if(type=="cm")
								value = value/2.54;
							if(type=="m")
								value = (value*100)/2.54;
							if(type== "mm")
								value = (value/10)/2.54;
							if(type=="ft")
								value = value*12;
							if(type=="yd")
								value = value*36;
											
			
						
					return value;
					}
				function UnitConvertF(value,type){
						
							if(type== "cm")
								value = (value/2.54)/12;
							if(type =="m")
								value = ((value*100)/2.54)/12;
							if(type=="mm")
								value = ((value/10)/2.54)/12;				
							if(type=="in")
								value = value/12;
							if(type=="yd")
								value = value*3;
							
						
					return value;
					}
				function CheckNum(value,label){
						var String1 = new String(value);
						var String2 = new String("");
						var String3 = new String("");
						var String4 = new String("");
						var temp;
						var i=0;
						var count=0;
						for(i=0;i<String1.length;i++){
							String2 = new String(parseFloat(String1.charAt(i)));
							if(String1.charAt(i)==".")
								count++;
							
							if((String2.length!=1&&String1.charAt(i)!='.')||count>1){
								alert("You entered an illegal value for the " + label);
								return false;
							}
						}
						return true;
					}
				function CheckParam(Param1,Param2,Param3,Param4){
						var Form = document.forms[0].form.options[document.forms[0].form.selectedIndex].text;
						var valid1 = 0,valid2 = 0,valid3 = 0,valid4 = 0;
						var counter = 0;
						
							if(Form=="Round"||Form=="Square"||Form=="Hexagonal"||Form=="Octagonal"){ 
								if(Param1==""||Param3==""||Param4 == ""){
								alert("You must fill in values for the Diameter And the Length!");
								return false;
								}	
								valid1 = CheckNum(Param1,"Diameter");
								valid3 = CheckNum(Param3,"Length");
								valid4 = CheckNum(Param4,"Number of Pieces");
								if(valid1!=true||valid3!=true||valid4!=true)
									return false;
							}
							if(Form=="Flat"||Form=="Sheet"||Form=="Plate"){
							if(Param1==""||Param3==""||Param4 == ""||Param2==""){
								alert("You must fill in values for the Thickness And the Width And the Length!");
								return false;
								}	
								valid1 = CheckNum(Param1,"Thickness");			
								valid2 = CheckNum(Param2,"Width");
								valid3 = CheckNum(Param3,"Length");
								valid4 = CheckNum(Param4,"Number of Pieces");
								if(valid1!=true||valid3!=true||valid4!=true||valid2!=true)
									return false;
				
							}
							if(Form=="Tubular"){ 
							if(Param1==""||Param3==""||Param4 == ""||Param2==""){
								alert("You must fill in values for the Outer Diameter And the Wall And the Length!");
								return false;
								}	
								valid1 = CheckNum(Param1,"Outer Diameter");
								valid2 = CheckNum(Param2,"Wall");
								valid3 = CheckNum(Param3,"Length");
								valid4 = CheckNum(Param4,"Number of Pieces");
								if(valid1!=true||valid2!=true||valid3!=true||valid4!=true)
									return false;
				
							}
							if(Form=="Circular"){ 
							if(Param1==""||Param3==""||Param4 == ""){
								alert("You must fill in values for the Diameter And the Thickness!");
								return false;
								}	
								valid1 = CheckNum(Param1,"Diameter");			
								valid3 = CheckNum(Param3,"Thickness");
								valid4 = CheckNum(Param4,"Number of Pieces");
								if(valid1!=true||valid3!=true||valid4!=true)
									return false;
				
							}
							if(Form=="Ring"){
							if(Param1==""||Param2==""||Param3==""||Param4 == ""){
								alert("You must fill in values for the Outer Diameter And the Inner Diameter And the Thickness!");
								return false;
								}	
								valid1 = CheckNum(Param1,"Outer Diameter");
								valid2 = CheckNum(Param2,"Inner Diameter");
								valid3 = CheckNum(Param3,"Thickness");
								valid4 = CheckNum(Param4,"Number of Pieces");
								if(valid1!=true||valid2!=true||valid3!=true||valid4!=true)
									return false;
				
							}
					
			
						
						return true;
					}
				function CalculateWeight(){
						
						var Param = new Array(5);
						var Units = new Array(4);
						var Convert;
						var FormType;
						var Result;
						var Good;
						Param[0] = document.forms[0].param1.value;
						Param[1] = document.forms[0].param2.value;
						Param[2] = document.forms[0].param3.value;
						Param[3] = document.forms[0].param4.value;
						Good = CheckParam(Param[0],Param[1],Param[2],Param[3]);
						if(!Good)
							return;			
			
			
						Units[0] = document.forms[0].units1.options[document.forms[0].units1.selectedIndex].text;
						Units[1] = document.forms[0].units2.options[document.forms[0].units2.selectedIndex].text;;
						Units[2] = document.forms[0].units3.options[document.forms[0].units3.selectedIndex].text;;
						
						Param[0] = UnitConvertI(Param[0],Units[0]);
						Param[1] = UnitConvertI(Param[1],Units[1]);
						Param[2] = UnitConvertF(Param[2],Units[2]);
						
						FormType = document.forms[0].form.options[document.forms[0].form.selectedIndex].text;
						if(document.forms[0].product.selectedIndex>0)
						Convert = Factor[document.forms[0].product.selectedIndex-1];
						else
						Convert = .3462;	
						document.forms[0].result.rsize = "4";
						
							if(FormType=="Round"){
								Result = new String(2.6729 * Param[0] * Param[0] * Convert * Param[2] * Param[3]);
								document.forms[0].result.value = Result.substring(0,Result.indexOf(".")+RoundOff);
							}
							if(FormType=="Square"){
								Result = new String(3.4032 * Param[0] * Param[0] * Convert * Param[2] * Param[3]);
								document.forms[0].result.value = Result.substring(0,Result.indexOf(".")+RoundOff);
							}
							if(FormType=="Hexagonal"){
								Result= new String(2.9473 * Param[0] * Param[0] * Convert * Param[2] * Param[3]);
								document.forms[0].result.value = Result.substring(0,Result.indexOf(".")+RoundOff);
							}
							if(FormType=="Octagonal"){
								Result = new String(2.8193 * Param[0] * Param[0] * Convert * Param[2] * Param[3]);
								document.forms[0].result.value = Result.substring(0,Result.indexOf(".")+RoundOff);
							}
							if(FormType=="Flat"||FormType=="Sheet"||FormType=="Plate"){
								Result = new String(3.4032 * Param[0] * Convert * Param[1] * Param[2] * Param[3]);					document.forms[0].result.value = Result.substring(0,Result.indexOf(".")+RoundOff);
							}
							if(FormType=="Tubular"){
								Result = 10.68 * (Param[0] - Param[1]) * Convert * Param[1] * Param[2] * Param[3];
								if(Result<0)
									alert("The Width of the Tube Wall cannot exceed the Outer Diameter!");
								else{
								Result = new String(Result);
								document.forms[0].result.value = Result.substring(0,Result.indexOf(".")+RoundOff);
								}
							}
							if(FormType=="Circular"){
								Param[2] = UnitConvertI(Param[2],"ft");
								Result = new String(.22274 * Param[0] * Convert * Param[0] * Param[2] * Param[3]);
								document.forms[0].result.value = Result.substring(0,Result.indexOf(".")+RoundOff);
							}
							if(FormType=="Ring"){
								Param[2] = UnitConvertI(Param[2],"ft");
								Result = (.22274 * Param[2] * ((Param[0]*Param[0]) - (Param[1]*Param[1])) * Convert * Param[3]);
								if(Result<0)
									alert("The Inner Diameter cannot exceed the Outer Diameter!");
								else{
								Result = new String(Result);
								document.forms[0].result.value = Result.substring(0,Result.indexOf(".")+RoundOff);
								}
							}
					
			
						
				}
				function ClearFields(){
					document.forms[0].param1.value = "";
					document.forms[0].param2.value = "";
					document.forms[0].param3.value = "";
					document.forms[0].param4.value = "1";
					document.forms[0].result.value = "";
					
					}
				function ChangeLabel(){
					var formType;
					formType = document.forms[0].form.options[document.forms[0].form.selectedIndex].text;
			
					
						
					if(formType=="Round"){
						document.forms[0].lbl1.value = "Diameter:";
						document.forms[0].lbl2.value = "(no value)";
						document.forms[0].lbl3.value = "Length:";
						}
					if(formType=="Square"){
						document.forms[0].lbl1.value = "Thickness:";
						document.forms[0].lbl2.value = "(no value)";
						document.forms[0].lbl3.value = "Length:";
						}
					if(formType== "Hexagonal"){
						document.forms[0].lbl1.value = "Diameter:";
						document.forms[0].lbl2.value = "(no value)";
						document.forms[0].lbl3.value = "Length:";
						}
					if(formType=="Octagonal"){
						document.forms[0].lbl1.value = "Diameter:";
						document.forms[0].lbl2.value = "(no value)";
						document.forms[0].lbl3.value = "Length:";
						}
					if(formType=="Flat"||formType=="Sheet"||formType=="Plate"){
						document.forms[0].lbl1.value = "Thickness:";
						document.forms[0].lbl2.value = "Width:";
						document.forms[0].lbl3.value = "Length:";
						}
					if(formType=="Tubular"){
						document.forms[0].lbl1.value = "Outer Diameter:";
						document.forms[0].lbl2.value = "Wall:";
						document.forms[0].lbl3.value = "Length:";
						}
					if(formType=="Circular"){
						document.forms[0].lbl1.value = "Diameter:";
						document.forms[0].lbl2.value = "(no value)";
						document.forms[0].lbl3.value = "Thickness:";
						}
					if(formType=="Ring"){
						document.forms[0].lbl1.value = "Outer Diameter:";
						document.forms[0].lbl2.value = "Inner Diameter:";
						document.forms[0].lbl3.value = "Thickness:";
						}
			
					
				}
				ChangeLabel();
				ClearFields();