function autopop() {

		ht = window.screen.availheight - 30
		ht = 600
		windowhandle = window.open('student_auth.php?'+location.search.substring(1),'window','width=790,height='+ht+',scrollbars,top=0,left=0,resizable');
}

function openwindow() {
		ht = window.screen.availheight - 30
		ht = 600
		u = login.username.value
		p = login.password.value
		location.reload()
		windowhandle = window.open('student_auth.php?username='+u+'&password='+p,'window','width=790,height='+ht+',scrollbars,top=0,left=0,resizable');
	}