function popwindow(pop,width,height)
{
	var url = pop;  
	var wd = width;
	var he = height;
	
	window.open(url,"","toolbar=0,menubar=0,scrollbars=no,resizable=no,width=" + wd +",height=" + he + ";")
}

function popwindow2(pop,targert,width,height)
{
	var url = pop;  
	var wd = width;
	var he = height;
	if(targert>0){
		window.open(url,"","toolbar=0,menubar=0,scrollbars=yes,resizable=no,width=" + targert +",height=" + width + ";").focus();
	}else{
		window.open(url,targert,"toolbar=0,menubar=0,scrollbars=yes,resizable=no,width=" + wd +",height=" + he + ";").focus();
	}
}

function popwindow3(pop,target,width,height)
{
	var url = pop;  
	var wd = width;
	var he = height;
	
	window.open(url,target,"toolbar=0,menubar=0,scrollbars=no,resizable=no,width=" + wd +",height=" + he + ";").focus();
}

function popwindow4(pop,target,width,height)
{
	var url = pop;  
	var wd = width;
	var he = height;
	
	window.open(url,"","toolbar=0,menubar=0,scrollbars=yes,resizable=no,width=" + wd +",height=" + he + ";").focus();
}

function OnMp3(pop)
{
	var url = pop;  
	var wd = 500;
	var he = 650;
	window.open("/study/study_012.asp","OnMP3","toolbar=0,menubar=0,scrollbars=no,resizable=no,width=" + wd +",height=" + he + ";").focus();
}


//·¹À̾î shoe / hide ½ºÅ©¸³Æ®
function LayerSH(LayerName,Status) {
ns4 = (document.layers)?true:false
ie4 = (document.all)?true:false

if (ns4) {
	LayerN = document.layers[LayerName]
	if (Status == 'show') LayerN.visibility = 'show';
	if (Status == 'hide') LayerN.visibility = 'hidden';
	}	
if (ie4) {
	LayerN = document.all[LayerName].style
	if (Status == 'show') LayerN.visibility = 'visible';
	if (Status == 'hide') LayerN.visibility = 'hidden';
	}
}