non-jira: prevent potential issues when col1 is not available, don't execute code

src/main/java/org/olat/core/commons/fullWebApp/_content/main_3cols.html

@@ -42,6 +42,7 @@ jQuery().ready(function() {
 	OPOL.adjustHeight();
 	
 	// Main vertical splitter, anchored to the browser window
+#if($existsCol1 && $r.visible("col1"))
 	jQuery("#b_col1").resizable({
         handles: 'e',
         containment: '#b_main',
@@ -64,6 +65,7 @@ jQuery().ready(function() {
 	    jQuery('#b_col3').css('width', (contWidth - width));
 	    jQuery('#b_col3').css('margin-left', width);
 	};
+#end
 
 #if($existsCol2 && $r.visible("col2"))		
 	jQuery("#b_col3").resizable({