function setOptions(chosen){

var selbox = document.searchForm.size;
selbox.options.length = 0;

if (chosen == "any") {
	selbox.options[selbox.options.length] = new Option('All sizes','any');
	selbox.options[selbox.options.length] = new Option('Less than 1,000','1000');
	selbox.options[selbox.options.length] = new Option('1,001 - 5,000','5000');
	selbox.options[selbox.options.length] = new Option('5,001 - 10,000','10000');
	selbox.options[selbox.options.length] = new Option('10,001 - 25,000','25000');
	selbox.options[selbox.options.length] = new Option('25,001 - 50,000','50000');
	selbox.options[selbox.options.length] = new Option('50,000+','100000');
	}
	if (chosen == "industrial") {
	selbox.options[selbox.options.length] = new Option('All sizes','any');
	selbox.options[selbox.options.length] = new Option('Less than 1,000','1000');
	selbox.options[selbox.options.length] = new Option('1,001 - 5,000','5000');
	selbox.options[selbox.options.length] = new Option('5,001 - 10,000','10000');
	selbox.options[selbox.options.length] = new Option('10,001 - 25,000','25000');
	selbox.options[selbox.options.length] = new Option('25,001 - 50,000','50000');
	selbox.options[selbox.options.length] = new Option('50,000+','100000');
	}
	if (chosen == "office") {
	selbox.options[selbox.options.length] = new Option('All sizes','any');
	selbox.options[selbox.options.length] = new Option('Less than 1,000','1000');
	selbox.options[selbox.options.length] = new Option('1,001 - 5,000','5000');
	selbox.options[selbox.options.length] = new Option('5,001 - 10,000','10000');
	selbox.options[selbox.options.length] = new Option('10,001 - 25,000','25000');
	selbox.options[selbox.options.length] = new Option('25,001 - 50,000','50000');
	selbox.options[selbox.options.length] = new Option('50,000+','100000');
	}
	if (chosen == "trade") {
	selbox.options[selbox.options.length] = new Option('All sizes','any');
	selbox.options[selbox.options.length] = new Option('Less than 1,000','1000');
	selbox.options[selbox.options.length] = new Option('1,001 - 5,000','5000');
	selbox.options[selbox.options.length] = new Option('5,001 - 10,000','10000');
	selbox.options[selbox.options.length] = new Option('10,001 - 25,000','25000');
	selbox.options[selbox.options.length] = new Option('25,001 - 50,000','50000');
	selbox.options[selbox.options.length] = new Option('50,000+','100000');
	}
	if (chosen == "land") {
	selbox.options[selbox.options.length] = new Option('All sizes','any');
	}

}