function chkNumeric(obj){
		var str, str2, b_editVal
		str=obj.value;
		str2="";
		b_editVal=0;

		for(i=0;i<str.length;i++){
			if (str.substring(i,i+1).charCodeAt(0) >= 48 && str.substring(i,i+1).charCodeAt(0) <= 57){
				str2+=str.substring(i,i+1);
			}
			else{
				b_editVal=1;
			}
		}

		obj.value=str2;

		if(b_editVal==1){
			alert("Numbers only allowed for '"+obj.name+"'\nAll other characters were removed!");
		}
	}