function load_precedent(target,tabId){
	try{
		xmlhttp = new XMLHttpRequest();
	}catch(e){
		xmlhttp = new ActiveXObject('Microsoft.XMLHTTP');
	}
	xmlhttp.onreadystatechange = function(){
		target = document.getElementById("precedent_area");
		if(xmlhttp.readyState == 4){
			result = xmlhttp.responseText;
			target.innerHTML = result;
			var scroll_area = document.getElementById("mycustomscroll3");
			if(scroll_area.fleXcroll != undefined){
				scroll_area.fleXcroll.updateScrollBars();
				scroll_area.fleXcroll.setScrollPos(false,0);
			}

		}
	}
	var tabId_array = new Array("tab02_01","tab02_02","tab02_03");
	var attrName = "class";
	// IEかを判別
	var isMSIE = /*@cc_on!@*/false;
	if(isMSIE){
		attrName = "className";
	}
	for(var i = 0; i < tabId_array.length; i++){
		if(tabId == tabId_array[i]){
			document.getElementById(tabId_array[i]).setAttribute(attrName,"current");
		}else{
			document.getElementById(tabId_array[i]).removeAttribute(attrName);
		}
	}
	read_file = "get_precedent.php?target="+target;
	xmlhttp.open('GET',read_file);
	xmlhttp.send(null);
}