function KeyEval(objInput, objEvent) {
	    var blnIE;
		var blnNS;
		var agt = navigator.userAgent.toLowerCase();
		var is_major = parseInt(navigator.appVersion);
		blnIE = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1)
				&& (is_major >= 4) && (agt.indexOf("msie 4")== -1));
		blnNS = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1)
				&& (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1)
				&& (agt.indexOf('webtv')==-1) && (agt.indexOf('hotjava')==-1)
				&& (is_major >= 4));

		var intKeycode;
		var objEnterKey = /[\x0D]/;
		if (blnIE) {
			intKeycode = objEvent.keyCode;
		}
		else if (blnNS) {
			intKeycode = objEvent.which;
		}
		else {
			return false;
		}
		if (objEnterKey.test(String.fromCharCode(intKeycode))) {
			return true;
		}
		else{
			return false;
		}
}