isIE = false;
	function isIEFunc(){
		isIE = /msie/i.test(navigator.userAgent) && !/opera/i.test(navigator.userAgent);
	}
	isIEFunc();
	
	function collapseTr(tr){
		var myitem = document.getElementById(tr);
		var mypic = document.getElementById(tr.replace('_row_','_pic_'));
		if(myitem.style.display=='none'){
			mypic.src = 'css/download.gif';
			if(isIE)
				myitem.style.display='block';
			else
				myitem.style.display='table-row';
		}else{
			mypic.src = 'css/download.gif';
			myitem.style.display='none';
		}
	}
	
	function ajax_parser(id,tdid){
		var retstr = ajaxRequest('readdata.php?data_id='+id);
		var myitem = document.getElementById(tdid);
		myitem.innerHTML = retstr;
	}