window.addEvent('domready', function() {

			// if on search results page, allow last search to show up

			if( $('roi_input').getProperty( 'value' ) == '' ) {
				$('roi_input').setProperty( 'value', 'Search' );
			}

			// if field has default text ( "Search" ) - change to blank 
			$('roi_input').addEvent('focus', function(){
				if( $('roi_input').getProperty( 'value' ) == 'Search' ) {
					$('roi_input').setProperty( 'value', '' );	
				}
			});

			// if field has been modified, don't swap back to "Search" on blur
			$('roi_input').addEvent('blur', function(){
				if( $('roi_input').getProperty( 'value' ) == '' ) {
					$('roi_input').setProperty( 'value', 'Search' );
				}				
			});

});