function chek_digits(obj){
    var pattern=/[^0-9]/gi;
    var reg = new RegExp (pattern);
    var value=obj.value;
    obj.value=value.replace(reg,'');
}

function PreloadImages() {
  	var d=document;
  	if(d.images){
  	  if(!d.NM) d.NM=new Array();
      var i,j=d.NM.length;
	  for(i=1; i<PImages.length; i++)
	  if (PImages[i].indexOf("#")!=0){
	  	  d.NM[j]=new Image;
		  d.NM[j++].src=PImages[i];
	  }
    }
}