removed useless _ folders

Invisibility/Invisibility.sol

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

Invisibility/Invisibility/Invisibility.prj

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+<Project name="Invisibility" guid="D73245E3-6C00-1014-B904-200204C60A89">
+	<Object name="Object" guid="D73246CE-6C00-1014-B904-200204C60A89">
+		<Script name="Invisibility_1.lsl" guid="D732817B-6C00-1014-B904-200204C60A89">
+		</Script>
+	</Object>
+</Project>

Invisibility/Invisibility/Object/Invisibility_1.lsl

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+// :CATEGORY:Invisibility
+// :NAME:Invisibility
+// :AUTHOR:Anonymous
+// :CREATED:2010-01-10 05:20:56.000
+// :EDITED:2013-09-18 15:38:55
+// :ID:403
+// :NUM:559
+// :REV:1.0
+// :WORLD:Second Life
+// :DESCRIPTION:
+// Invisibility.lsl
+// :CODE:
+
+1// remove this number for the script to work.
+
+// global variables
+string texture_a="invis1";  // use a "blank texture here.  The easiest
+                            // way to get it is by selecting the "blank"
+                            // from the texture picker and then copying 
+                            // it to your inventory.  Either call it
+                            // "invis1" or change the value for texture_a
+                            // to be the name you choose.
+                            
+key texture_b="ffffffff-ffff-ffff-ffff-ffffffffffff"; 
+// The above is a key for an "image not available" texture which is
+// globally available.  I chose it because it is simple and easy for
+// just about any client to load.
+
+
+// gloabl functions
+
+// This is the function that makes an object "invisible"
+invis()
+{
+    llSetTexture(texture_a,ALL_SIDES);
+    llSetAlpha(0.0,ALL_SIDES);
+    llScaleTexture(500.0,500.0,ALL_SIDES);
+    llSetTexture(texture_b,4);
+    llSetTexture(texture_a,4);
+    llSetTexture(texture_a,2);
+    llSetTexture(texture_b,2);
+}
+    
+
+default
+{
+    state_entry()
+    {
+        invis(); // call the invisibility function on entry.
+    }
+    on_rez(integer i)
+    {
+        invis(); // Call it upon being rezzed :-)
+    }
+    
+}
+// END //