var win = null;
function PopUp(pagina,nome,w,h,scroll,resize){
	LeftPosition = (screen.width) ? (screen.width-w)/2 : 0;
	TopPosition = (screen.height) ? (screen.height-h)/2 : 0;
	settings = 'height='+h+',width='+w+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',resizable='+resize+',status=no'
	win = window.open(pagina,nome,settings);
}