var isIE = (document.all) ? 1 : 0;

function keyFilter(e, strPattern)
{
   var chr = (isIE) ? e.keyCode : e.which;
   var ch = String.fromCharCode(chr);

   if (chr != 13 && chr != 8 && chr != 0)
   {
      var re = new RegExp(strPattern);

      if (ch.search(re) == -1)
      {
         if(isIE)
          e.returnValue = false;
         else
          e.preventDefault();
      }
   }
}

function openandclose(dv)
{
	for (i=0; i<document.getElementsByTagName("div").length; i++) 
	{
		dz=document.getElementsByTagName("div")[i];
		if (dz.className=='dosthid') dz.style.display='none';
	}

	var d=document.getElementById(dv);	
	if (d.style.display=='none') d.style.display='block'; else d.style.display='none';
}
function locat($url){
	document.location.href=$url;	
}
function submit_enabled(s)
{
	document.getElementById(s).disabled=false;
}