function buttonDown()
{
	var strSRC=new String(window.event.srcElement.src);
	var arySRC=strSRC.split("/");
	arySRC[arySRC.length-1]=arySRC[arySRC.length-1].replace(/\./, "Down.");		
	window.event.srcElement.src=arySRC.join("/");
}

function buttonUp()
{
	var strSRC=new String(window.event.srcElement.src);
	var arySRC=strSRC.split("/");
	arySRC[arySRC.length-1]=arySRC[arySRC.length-1].replace(/Down\./, ".");		
	window.event.srcElement.src=arySRC.join("/");

}

function checkfield()
{
	Key=window.event.keyCode;
	if (Key!=13 && (Key < 48 || Key>57) && Key != 46)
	{
		window.event.returnValue=false;
		return;
	}
	if (Key == 46)
	{
		if(window.event.srcElement.value.search(/\./g)!=-1)
			window.event.returnValue=false;
		return;			
	}
}