function inputFocus(oInput, startValue){
    if(oInput.defaultClass == null) oInput.defaultClass = oInput.className;
    if(startValue) oInput.defaultValue = startValue;
    oInput.className = oInput.className + " focused";
    if(startValue && oInput.value == startValue) oInput.value = '';
    oInput.onblur = function(){
        this.className = this.defaultClass;
        if(this.defaultValue && this.value == '') this.value = this.defaultValue;
    };
}