var first=0;

function file_preview() {
	var	cHtml = "";
	lim = document.form_main.limit.value;
	cHtml = "<div id=block" + lim + ">&nbsp;<input type=file name=\"Qnat_Fil"+lim+"\" size=30 class='textbox'> <a href=\"javascript:addcase()\"><img src=../img/plus.jpg border=0 align=absmiddle>Ãß°¡ </a> <a href='javascript:delcase(" + lim + ")'><img src=../img/minus.jpg border=0 align=absmiddle>»èÁ¦</a><br></div>"

	file_preView.insertAdjacentHTML("BeforeEnd",cHtml);
}

function addcase()
{
	files = document.form_main.attach_num.value;
	if (files > 9) {
		alert("ÆÄÀÏÀº ÃÖ´ë 10°³ ÀÔ´Ï´Ù");
		return;
	}
	lim = document.form_main.limit.value;
	document.form_main.limit.value =  ++lim;
	document.form_main.attach_num.value++;
	file_preview();
}

function delcase(caseno)
{
	if (document.form_main.attach_num.value < 2){
		alert("ÆÄÀÏÀº ÃÖ¼Ò 1°³ ÀÌ»óÀÔ´Ï´Ù.");
		return;
	}
	document.all["block"+caseno].outerHTML = "";
	document.form_main.attach_num.value--;
}

function init_pollcase()
{
	if (first==0)
	{
		document.form_main.limit.value = 1;
		file_preview();
		first=1;
		document.form_main.attach_num.value=1;
	}
	showMore('file_preView');
}

function showMore(name){ 
	if(document.all[name].style.display!="none"){ 
		document.all[name].style.display="none"; 
	} 
	else{ 
		document.all[name].style.display=""; 
	}
}