function ImageRollOver(img, src, src_RO, state)
{

    var g = document.getElementById(img);
    g.src = state == 'over' ? src_RO : src;

}


function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

// Only allow numbers to be inputted
function allownumbers(e)
   {
    var key = window.event ? e.keyCode : e.which;
    var keychar = String.fromCharCode(key);
    var reg = new RegExp("[0-9.]")
    if (key == 8)
    {
     keychar = String.fromCharCode(key);
    }
    if (key == 13)
    {
     key=8;
     keychar = String.fromCharCode(key);     
    }
    return reg.test(keychar);
   }