function Init(){
	
	var callback = function() {
		//var viewport = document.viewport.getDimensions(); // Gets the viewport as an object literal
		//var width = viewport.width; // Usable window width
		//var height = viewport.height; // Usable window height

		var width = $j(window).width();
		var height = $j(window).height();
		
		//$('main').setStyle({'height': 'auto'}) ;
		$j('#main').css('height', 'auto') ;

		//var main_height = $('main').getHeight();
		var main_height = $j('#main').height();
		
		// 230
		if((245 + main_height) < height){
			main_height = height - 245;
			//$('main').setStyle({'height': main_height+'px'}) ;
			$j('#main').css('height', main_height+'px') ;
		}
		else {
			
		}

		
	}

	callback() ;

	//Event.observe(window, 'resize',	callback) ;
	$j(window).resize(function() {
			callback();
		});

}