+var $ = jQuery = function(a,c) {
+ /*
+ * Handle support for overriding other $() functions. Way too many libraries
+ * provide this function to simply ignore it and overwrite it.
+ */
+
+ // Check to see if this is a possible collision case
+ if ( _$ && !c && ( a.constructor == String &&
+
+ // Make sure that the expression is a colliding one
+ !/[^a-zA-Z0-9_-]/.test(a) &&
+
+ // and that there are no elements that match it
+ // (this is the one truly ambiguous case)
+ !document.getElementsByTagName(a).length ) ||
+
+ // Watch for an array being passed in (Prototype 1.5)
+ a.constructor == Array )
+
+ // Use the default method, in case it works some voodoo
+ return _$( a );
+
+ // Watch for when a jQuery object is passed in as an arg
+ if ( a && a.jquery )
+ return a;
+
+ // If the context is global, return a new object