var win=null;
function popup(mypage,myname,w,h,scroll,pos){
	//alert((screen.height-h)/2);
	if(pos=="random"){
		LeftPosition = (screen.width) ? Math.floor(Math.random()*(screen.width-w)) : 100;
		TopPosition = (screen.height) ? Math.floor(Math.random()*((screen.height-h)-75)) : 100;
	}
	else if(pos=="center"){
		LeftPosition = (screen.width) ? (screen.width-w)/2 : 100;
		TopPosition = (screen.height) ? (screen.height-h)/2 : 100;
	}
	else{
		LeftPosition = 0;
		TopPosition = 20;
	}

	settings = "toolbar=no,location=no,status=no,scrollbars=yes,menubar=no,directories=no,resizable=no,width="+w+",height="+h+",top="+TopPosition+",left="+LeftPosition;
	//alert(myname);
	win = window.open(mypage,myname,settings);
}