cheking if lexical_cast is ok

src/page.h

@@ -870,7 +870,13 @@ namespace xmreg {
             // first check if searching for block of given height
             if (search_text.size() < 12)                                
             {
-                result_html = show_block(boost::lexical_cast<uint64_t>(search_text));
+                uint64_t blk_height;
+
+                try
+                {
+                    blk_height = boost::lexical_cast<uint64_t>(search_text);
+
+                    result_html = show_block(blk_height);
 
                     // nasty check if output is "Cant get" as a sign of
                     // a not found tx. Later need to think of something better.
@@ -878,6 +884,13 @@ namespace xmreg {
                     {
                          return result_html;
                     }
+
+                }
+                catch(boost::bad_lexical_cast &e)
+                {
+                    cerr << search_text << " is not a number" << endl;
+                }
+
             }
 
             // second let try searching for tx