removed useless _ folders

controlled_window/controlled_window.sol

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+<Solution name="controlled_window">
+<Project name="controlled_window" path="controlled_window\controlled_window.prj" active="true"/>
+</Solution>

controlled_window/controlled_window/Object/controlled_window_1.lsl

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+// :CATEGORY:Windows
+// :NAME:controlled_window
+// :AUTHOR:Anonymous
+// :CREATED:2010-01-10 05:20:56.000
+// :EDITED:2013-09-18 15:38:51
+// :ID:204
+// :NUM:278
+// :REV:1.0
+// :WORLD:Second Life
+// :DESCRIPTION:
+// controlled window.lsl
+// :CODE:
+
+// window script to set transparency between 0 and 1 in 5 steps
+// use ll
+default {
+
+    touch_start(integer total_number) {
+        llOwnerSay("Use the controller to switch transparency.");
+    }
+    
+    link_message(integer sender_num, integer num, string str, key id) {
+        if(str == "transp") {
+            llSetAlpha((0.25 * (float)num), ALL_SIDES); // set entire prim 100% visible.
+        }
+    }
+    
+}
+// END //

controlled_window/controlled_window/controlled_window.prj

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+<Project name="controlled_window" guid="D702F78A-6C00-1014-B904-200204C60A89">
+	<Object name="Object" guid="D702F88E-6C00-1014-B904-200204C60A89">
+		<Script name="controlled_window_1.lsl" guid="D7030EB1-6C00-1014-B904-200204C60A89">
+		</Script>
+	</Object>
+</Project>