function myKeyDown()
{
    var    k=window.event.keyCode;   

    if ((k==46)||(k==8)||(k==189)||(k==109)||(k==190)||(k==110)|| (k>=48 && k<=57)||(k>=96 && k<=105)||(k>=37 && k<=40)) 
    {}
    else if(k==13){
         window.event.keyCode = 9;}
    else{
         window.event.returnValue = false;}
}
// style="ime-mode:disabled" onkeydown="myKeyDown()">