function SizeCheck() 
{ 
	//alert(document.body.clientHeight + "," +document.body.clientWidth); 	
	if(document.all.backDiv.style.display == "")
	{
		document.all.backDiv.style.width = "100%";

		// À©µµ¿ì°¡ µðÀÚÀÎ Å©±âº¸´Ù ÀÛÀº °æ¿ì
		if(document.body.clientHeight < 700)
			document.all.backDiv.style.height = "1024px";
		else
			document.all.backDiv.style.height = "100%";
	}
	
	if(document.all.layerDiv.style.display == "")
	{
    	var nwidth = document.all.layerDiv.style.width.replace("px", "");
    	var nheight = document.all.layerDiv.style.height.replace("px", "");
    	
		var LeftPosition = (document.body.clientWidth) ? (document.body.clientWidth-nwidth)/2 : 0;
		var TopPosition = (document.body.clientHeight) ? ((document.body.clientHeight-nheight)/2) + 60 : 0;
		
		if(document.body.clientHeight < nheight || TopPosition-100 < 0)
			TopPosition = 0;
		else
			TopPosition = TopPosition-100;
			
		document.all.layerDiv.style.top = TopPosition;
		document.all.layerDiv.style.left = LeftPosition;
	}
}