function gourl(xval) {

    switch(xval) {
		case "email": formmail(); break;
		case "location": location.replace('../sub1/sub1_4.htm'); break;
		case "home": location.replace('../main/main.htm'); break;

	}

}

function formmail() {
    var w=400; 
	var h=500;
	var sx=screen.width;
	var sy=screen.height;
	if((h > sy) || (w > sx)) scrol=1;
	else scrol=0;
	if(w>sx) w=sx;
	if(h>sy) h=sy;

	var x=sx/2-w/2;
	var y=50;
	window.open('../bbs/formmail/formmail.html','mail','width='+w+',height='+h+',scrollbars='+scrol+',resizable=1,top='+y+',left='+x)


}