GSI LENS CALCULATOR

 

&lt;html&gt;<BR>&lt;head&gt;<BR>&lt;title&gt;GOLDEN STATE INSTRUMENT Co. &lt;/title&gt;<BR>&lt;meta http-equiv="Content-Type" <BR> --&gt;<BR>&lt;/style&gt;<BR>&nbsp; &lt;script language="javascript"&gt;<BR>&lt;!--<BR>// Field of view calculator<BR> <BR>// Evaluates lens format selection<BR>function lens_format(){<BR>&nbsp; if (document.lenscalc.radio1[0].checked){<BR>&nbsp; var1 = 3.2<BR>&nbsp; var2 = 2.4<BR>&nbsp;&nbsp;&nbsp; show_format()<BR>&nbsp;&nbsp;&nbsp; }<BR>&nbsp;&nbsp;&nbsp; else if (document.lenscalc.radio1[1].checked){<BR>&nbsp;&nbsp;&nbsp; var1 = 4.8<BR>&nbsp; var2 = 3.6<BR>&nbsp; show_format()<BR>&nbsp;&nbsp;&nbsp; }<BR>&nbsp;&nbsp;&nbsp; else if (document.lenscalc.radio1[2].checked){<BR>&nbsp;&nbsp;&nbsp; var1 = 6.4<BR>&nbsp; var2 = 4.8<BR>&nbsp; show_format()<BR>&nbsp;&nbsp;&nbsp; }<BR>&nbsp;&nbsp;&nbsp; else if (document.lenscalc.radio1[3].checked){<BR>&nbsp;&nbsp;&nbsp; var1 = 8.8<BR>&nbsp; var2 = 6.6<BR>&nbsp; show_format()<BR>&nbsp;&nbsp;&nbsp; }<BR>&nbsp;&nbsp;&nbsp; else if (document.lenscalc.radio1[4].checked){<BR>&nbsp;&nbsp;&nbsp; var1 = 12.8<BR>&nbsp; var2 = 9.6<BR>&nbsp; show_format()<BR>&nbsp;&nbsp;&nbsp; }<BR>&nbsp;&nbsp;&nbsp; else {<BR>&nbsp;&nbsp;&nbsp; }<BR>//Performs calculations <BR>function show_format(){<BR>&nbsp;&nbsp;&nbsp; var distance = document.lenscalc.distance.value<BR>&nbsp;&nbsp;&nbsp; var horizontal = document.lenscalc.horizontal.value<BR>&nbsp;&nbsp;&nbsp; var lens_size = document.lenscalc.lens_size.value<BR>&nbsp;&nbsp;&nbsp; var vertical = document.lenscalc.vertical.value<BR>&nbsp;&nbsp;&nbsp; var angle_view = document.lenscalc.angle_view.value<BR>&nbsp;&nbsp;&nbsp; <BR>&nbsp;&nbsp;&nbsp; //calc h v<BR>&nbsp;&nbsp;&nbsp; if ((horizontal &gt; 0) &amp;&amp; (vertical == 0)) {<BR>&nbsp;&nbsp;&nbsp; vertical = horizontal*.75 <BR>&nbsp;&nbsp;&nbsp; document.lenscalc.vertical.value = Math.round(vertical*1000)/1000<BR>&nbsp; }<BR>&nbsp; else if ((horizontal == 0) &amp;&amp; (vertical &gt; 0)) {<BR>&nbsp;&nbsp;&nbsp; horizontal = vertical/3*4<BR>&nbsp;&nbsp;&nbsp; document.lenscalc.horizontal.value = Math.round(horizontal*1000)/1000<BR>&nbsp; }&nbsp; <BR>&nbsp;&nbsp;&nbsp; else if ((horizontal &gt; 0) &amp;&amp; (vertical &gt; 0)) {<BR>&nbsp;&nbsp;&nbsp; horizontal = vertical/3*4<BR>&nbsp;&nbsp;&nbsp; document.lenscalc.horizontal.value = Math.round(horizontal*1000)/1000<BR>&nbsp; }&nbsp; <BR>&nbsp;&nbsp;&nbsp; //calc lens_size<BR>&nbsp;&nbsp;&nbsp; if ((distance &gt; 0) &amp;&amp; (horizontal &gt; 0) &amp;&amp; (vertical &gt; 0) &amp;&amp; (lens_size == 0)){<BR>&nbsp; lens_size = distance/horizontal*var1<BR>&nbsp; document.lenscalc.lens_size.value = Math.round(lens_size*1000)/1000<BR>&nbsp; }<BR>&nbsp; //calc distance <BR>&nbsp;&nbsp;&nbsp; else if ((distance == 0) &amp;&amp; (horizontal &gt; 0) &amp;&amp; (vertical &gt; 0) &amp;&amp; (lens_size &gt; 0)){<BR>&nbsp;&nbsp;&nbsp; distance = horizontal/var1*lens_size<BR>&nbsp;&nbsp;&nbsp; document.lenscalc.distance.value = Math.round(distance*1000)/1000<BR>&nbsp;&nbsp;&nbsp; }<BR>&nbsp; //calc h v <BR>&nbsp;&nbsp;&nbsp; else if ((distance &gt; 0) &amp;&amp; (horizontal == 0) &amp;&amp; (vertical == 0) &amp;&amp; (lens_size &gt; 0)){<BR>&nbsp;&nbsp;&nbsp; horizontal = distance/lens_size*var1<BR>&nbsp;&nbsp;&nbsp; vertical = horizontal*.75<BR>&nbsp;&nbsp;&nbsp; document.lenscalc.horizontal.value = Math.round(horizontal*1000)/1000<BR>&nbsp;&nbsp;&nbsp; document.lenscalc.vertical.value = Math.round(vertical*1000)/1000<BR>&nbsp;&nbsp;&nbsp; }<BR>&nbsp;&nbsp;&nbsp; //error&nbsp;&nbsp;&nbsp; <BR>&nbsp;&nbsp;&nbsp; else {alert("Enter two of the three fields groups only. Please try again.")}<BR>&nbsp;&nbsp;&nbsp; //calc angle view <BR>&nbsp;&nbsp;&nbsp; angle_view = Math.atan((.5*horizontal)/distance)<BR>&nbsp; angle_view = angle_view*2*57.2957795<BR>&nbsp; //angle_view = (horizontal*57.29)/distance<BR>&nbsp;&nbsp;&nbsp; document.lenscalc.angle_view.value = Math.round(angle_view*10)/10<BR>&nbsp;&nbsp;&nbsp; }&nbsp;&nbsp;&nbsp; <BR>}&nbsp;&nbsp;&nbsp; <BR>//--&gt;<BR>&lt;/script&gt;&nbsp; <BR>&nbsp; &lt;script type="text/javascript"&gt;<BR>&nbsp; function expand(sec,lin) <BR>&nbsp; {<BR>&nbsp; &nbsp; thisSec = document.getElementById(sec);<BR>&nbsp; &nbsp; thisLin = document.getElementById(lin);<BR>&nbsp; &nbsp; if (thisSec != null) <BR>&nbsp; &nbsp; {<BR>&nbsp; &nbsp; &nbsp; thisSec.style.display = (thisSec.style.display =='none') ?'block': 'none'<BR>&nbsp; &nbsp; }<BR>&nbsp; &nbsp; thisLin.style.display = 'none'<BR>&nbsp; &nbsp; return false<BR>&nbsp; }<BR>&nbsp; &lt;/script&gt;<BR>&nbsp; <BR>&nbsp; &lt;script src="<a href="http://www.google-analytics.com/urchin.js" target=_blank >http://www.google-analytics.com/urchin.js</a>" type="text/javascript"&gt;<BR>&nbsp; &lt;/script&gt;<BR><BR>&nbsp; &lt;script type="text/javascript"&gt;<BR>&nbsp; _uacct = "UA-1436932-2";<BR>&nbsp; urchinTracker();<BR>&nbsp; &lt;/script&gt;<BR>&nbsp; <BR><BR><BR>&lt;div style="font-family: sans-serif; font-weight:bold;"&gt;Lens Calculator:&lt;/div&gt;<BR>&lt;div style="height: 1px; width: 100%; background-color: #000; font-size: 0px; line-height: 0px;"&gt;&amp;nbsp;&lt;/div&gt;<BR>&lt;img src="images/blank.gif" height="10"&gt;&lt;br&gt;<BR><BR>&lt;div align="center"&gt;<BR>&nbsp; &nbsp; &nbsp; &lt;table border="0" width="600px"&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &lt;tr&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;td width="35%" valign="top"&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;strong&gt;Instructions:&lt;/strong&gt; <BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;ul&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;li&gt;<BR><BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Select the lens format you are using.<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/li&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;li&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Enter any 2 of the 3 field groups.<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/li&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;li&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Press the "Calculate" button to calculate the<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; missing information.<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/li&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;li&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Press the "Reset" button to clear the form.<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/li&gt;<BR><BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/ul&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/td&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;td width="5%"&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/td&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;td valign="top" align="left" nowrap&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;form name="lenscalc"&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;table border="0"&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;tr&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;td align="left" valign="top" nowrap="nowrap"&gt;&lt;strong&gt;Select Lens Format:&lt;/strong&gt;&lt;/td&gt;<BR><BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;td align="right"&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 1/4 inch &lt;input type="radio" name="radio1"<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; value="quarter"&gt;&lt;br&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 1/3 inch &lt;input type="radio" name="radio1"<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; value="third" checked&gt;&lt;br&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 1/2 inch &lt;input type="radio" name="radio1"<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; value="half"&gt;&lt;br&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2/3 inch &lt;input type="radio" name="radio1"<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; value="twothirds"&gt;&lt;br&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 1 inch &lt;input type="radio" name="radio1"<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; value="oneinch"&gt;<BR><BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/td&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;td width="10%"&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/td&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/tr&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;tr&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;td align="left" nowrap="nowrap"&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;strong&gt;Enter Distance to Object&lt;/strong&gt; (in<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; feet):<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/td&gt;<BR><BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;td align="right"&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;input type="text" length="10" name=<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; "distance" size="10"&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/td&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;td width="10%"&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/td&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/tr&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;tr&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;td height="15"&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/td&gt;<BR><BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/tr&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;tr&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;td align="left" valign="center" nowrap=<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; "nowrap"&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;strong&gt;Enter Width of Picture&lt;/strong&gt; (in<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; feet):<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/td&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;td align="right" valign="center"&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;input type="text" length="10" name=<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; "horizontal" size="10"&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/td&gt;<BR><BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;td width="10%" valign="center"&gt;or&lt;/td&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/tr&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;tr&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;td align="left" valign="center" nowrap=<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; "nowrap"&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;strong&gt;Enter Height of Picture&lt;/strong&gt; (in<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; feet):<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/td&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;td align="right" valign="center"&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;input type="text" length="10" name=<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; "vertical" size="10"&gt;<BR><BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/td&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;td&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/td&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/tr&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;tr&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;td height="15"&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/td&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/tr&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;tr&gt;<BR><BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;td align="left" nowrap="nowrap"&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;strong&gt;Enter Size of Lens&lt;/strong&gt; (in<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; millimeters):<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/td&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;td align="right"&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;input type="text" length="10" name=<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; "lens_size" size="10"&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/td&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;td&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/td&gt;<BR><BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/tr&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;tr&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;td align="left" nowrap="nowrap"&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;strong&gt;Angle of View&lt;/strong&gt; (in<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; degrees):<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/td&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;td align="right"&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;input type="text" length="10" name="angle_view" size="10" disabled="disabled"&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/td&gt;<BR><BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;td&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/td&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/tr&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;tr&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;td align="right" colspan="2"&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;input type="button" value="Calculate"<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; onclick="lens_format()"&gt; &lt;input type="reset"<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; value="Reset" name="reset"&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/td&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;td&gt;<BR><BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/td&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/tr&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/table&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/form&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/td&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &lt;/tr&gt;<BR>&nbsp; &nbsp; &nbsp; &lt;/table&gt;<BR>&nbsp; &nbsp; &lt;/div&gt;<BR>&lt;br&gt;&lt;br&gt;&nbsp; &nbsp; &nbsp; &lt;!--//start of footer?&gt;--&gt;<BR><BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/td&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/tr&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &lt;/table&gt;<BR>&nbsp; &nbsp; &nbsp; &lt;/td&gt;<BR>&nbsp; &nbsp; &lt;/tr&gt;<BR>&nbsp; &nbsp; &lt;tr&gt; <BR>&nbsp; &nbsp; &nbsp; &lt;td height="1" bgcolor="cc9900"&gt;&lt;/td&gt;<BR>&nbsp; &nbsp; &lt;/tr&gt;<BR>&nbsp; &nbsp; &lt;tr&gt; <BR>&nbsp; &nbsp; &nbsp; &lt;td height="123" style="background: url(images/newfooter.jpg) no-repeat top center;" valign=bottom align=center&gt;<BR><BR>&nbsp; &nbsp; &nbsp; &nbsp; &lt;table width=100% border="0" cellspacing="0" cellpadding="0"&gt;&lt;tr&gt;&lt;td width=150px&gt;&lt;/td&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &lt;td align=center&gt;&lt;div style="font-family: sans-serif; font-size:small;"&gt;<BR>&nbsp; &nbsp; &nbsp;&nbsp;&nbsp; &nbsp; &amp;copy;COPYRIGHT, Golden State Instrument Co., ALL RIGHTS RESERVED &lt;/div&gt;&lt;/td&gt;<BR>&nbsp; &nbsp; &nbsp; &nbsp; &lt;td width=150px align=right&gt;&lt;/td&gt;&lt;/table&gt;<BR>&nbsp; &nbsp; &lt;/tr&gt;<BR>&nbsp; &lt;/table&gt;<BR>&lt;/div&gt;<BR>&lt;/body&gt;<BR>&lt;/html&gt;

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