function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}

function showinfo(num){
	if(num==1){
		t1.className='active';
		t2.className='normal2';
		table1.style.display='block';
		table2.style.display='none';
	}
	if(num==2){
		t1.className='normal2';
		t2.className='active';
		table1.style.display='none';
		table2.style.display='block';
	}
}
function is_number(str)
{
	exp=/[^0-9()-]/g;
	if(str.search(exp) != -1)
	{
		return false;
	}
	return true;
}