window.onload=function(){
		if ($(window).height()<$('#content').height()+340) {
					bigger();
		}
		if ($(window).height()>$('#master').height()) {
					smaller();
		}
	};
		
	$(window).resize(function () {
		if ($(window).height()<$('#content').height()+340) {
					bigger();
		}
		if ($(window).height()>$('#master').height()) {
					smaller();
		}
	});
	
	function bigger() {
		$('#zoneleft').height($('#content').height()+340);
		$('#zoneright').height($('#content').height()+340);
	};
	
	function smaller() {
		$('#master').height($(window).height());
		$('#zoneleft').height($(window).height());
		$('#zoneright').height($(window).height());
		$('#content').height($(window).height()-340);
	};