function height(){
	//alert('Test');
	var content = document.getElementById('main_content');
	var content_height = content.offsetHeight;
	var page = document.getElementById('main_page');
	var page_height = content_height - 350;
	if (page_height <= 0) page_height = 1;
	//alert (page_height);
	if (window.navigator.userAgent.indexOf("MSIE 6") > -1 || window.navigator.userAgent.indexOf("MSIE 5") > -1) {
		var difference1 = 0;
		var difference2 = 0;
	}
	else {
		var difference1 = 20;
		var difference2 = 10;	
	}
	page.style.height = page_height + "px";
}