function SubmitOnReturn(e, submitButtonID)
{
   var keyNum;
    // var e = event;

    if (window.event) //ie
    {
        keynum = e.keyCode
    }
    else if(e.which) // Netscape/Firefox/Opera
    {
        keynum = e.which
    } 
    if (keynum == 13)
    {
        // stop browser default actions
	if (window.event) //ie
        {
            e.returnValue = false;
        }
        else if(e.which) // Netscape/Firefox/Opera
        {
            e.preventDefault();
        } 


        var button = document.getElementById(submitButtonID);
        
        if (button.click)
	    {
    		// IE
	        button.click();
	    }
	    else
	    {
	        // FireFox
	        var e = document.createEvent("MouseEvents");
	        e.initEvent("click", true, true);
	        button.dispatchEvent(e);
	    }
    }  
    return true;
}