var form = document.forms[1];
function setSearch (extensions, minsize, maxsize)
{
	var form = document.forms[1];
	var searchstring = form.searchstring.value;

	// remove any search extensions present
	searchstring = searchstring.replace (/[*][.][^*.\s]+/g, '');

	// remove any plus signs from the beginning of search term
	searchstring = searchstring.replace (/^[+]/g, '');
	searchstring = searchstring.replace (/\s[+]/g, ' ');
	
	// replace dashes, periods, plus signs, and underscores with a quote mark
	searchstring = searchstring.replace( /[-._+]/g, '?' );

	// extract search phrases in quotes
	var regexp = /["'][^'"]+["']/g;
	// " fix syntax highlighting

	var searchphrases = searchstring.match (regexp);
	searchstring = searchstring.replace (regexp, '');
	
	if (searchphrases)
		for (var index = 0; index < searchphrases.length; index++)
		{
			// remove quotes from search phrases
			searchphrases[index] = searchphrases[index].replace (/["']/g, '');
			// "); fix syntax highlighting

			// add asterixes to phrases, remove superfluous asterixes
			searchphrases[index] = searchphrases[index].replace (/^[*]*/, '*');
			searchphrases[index] = searchphrases[index].replace (/[*]*$/, '*');
			searchphrases[index] = searchphrases[index].replace (/[*]+/, '*');

			// add quotes to search phrases
			searchphrases[index] = '"' + searchphrases[index] + '"';
		}

	// remove superfluous spaces
	searchstring = searchstring.replace (/\s+/g, ' ');
	searchstring = searchstring.replace (/^\s+/g, '');
	searchstring = searchstring.replace (/\s+$/g, '');
	
	// split search string into words
	if( searchstring != '' )
		var searchwords = searchstring.split( ' ' );

	if (searchwords)
	{
		for (var index = 0; index < searchwords.length; index++)
		{
			// add asterixes to words
			searchwords[index] = searchwords[index].replace (/^[*]*/, '*');
			searchwords[index] = searchwords[index].replace (/[*]*$/, '*');
			searchwords[index] = searchwords[index].replace (/[*]+/, '*');
		}
		if (searchphrases)
			var searchterms = searchwords.concat (searchphrases);
		else
			var searchterms = searchwords;
	}
	else if (searchphrases)
		var searchterms = searchphrases;

	// add AND operators
	if (searchterms)
		searchstring = '+' + searchterms.join (' +');
	else
		searchstring = '';

	form.searchstring.value = searchstring + ' ' + extensions;
	form.mode.selectedIndex = 0;
	form.minfilesize.value = minsize;
	form.maxfilesize.value = maxsize;
}