code: function( mElement, aArray ) {
  			for( var i=0; i<aArray.length; i++ )
  				if( aArray[i]==mElement )
  					return i;
  			
  			return -1;
  		}
docs: Check whether or not the given element exists in the given array
  
  @param mElement The element to be searched for (double equal comparison)
  @param aArray The array to be searched
  @return The index of the element within the array or -1 if it wasn't found