function filter_karakter(string2,e)
{
	var code;
	var special=/[\W]/g;
	if(!e)var e=window.event;
	if(e.keyCode) code=e.keyCode;
	else if(e.which) code=e.which;
	
	if(code!=37&&code!=39&&code!=8) //37 tombol kiri // 39 Tombol kanan // 8 backslases
	{
		string2.value=string2.value.replace(special,'');
	}
}

function filter_karakter2(string,e)
{
	var nil="";
	var code;
	if(!e)var e=window.event;
	if(e.keyCode) code=e.keyCode;
	else if(e.which) code=e.which;
	
	string2=string.value;
	if(code!=37&&code!=39&&code!=8)//37 tombol kiri // 39 Tombol kanan // 8 backslases
	{
		for(i=0;i<string2.length;i++)
		{
			if(string2.charAt(i)=='#' || string2.charAt(i)=='$'||string2.charAt(i)==';'|| string2.charAt(i)=='\\')
			{
				break;	
			}
			else nil=nil+string2.charAt(i);	
		}
		string.value=nil;
	}
}


function filter_number(string2,e)
{
	var special=/[^\d]/g;
	var code;
	if(!e)var e=window.event;
	if(e.keyCode) code=e.keyCode;
	else if(e.which) code=e.which;
	
	if(code!=37&&code!=39) //37 tombol kiri // 39 Tombol kanan
	{
		string2.value=string2.value.replace(special,'');
	}
}