jQuery.fn.numeric=function(decimal,callback)
{decimal=decimal||".";callback=typeof callback=="function"?callback:function(){};this.keypress(function(e)
{var key=e.charCode?e.charCode:e.keyCode?e.keyCode:0;if(key==13&&this.nodeName.toLowerCase()=="input")
{return true;}
else if(key==13)
{return false;}
var allow=false;if((e.ctrlKey&&key==97)||(e.ctrlKey&&key==65))return true;if((e.ctrlKey&&key==120)||(e.ctrlKey&&key==88))return true;if((e.ctrlKey&&key==99)||(e.ctrlKey&&key==67))return true;if((e.ctrlKey&&key==122)||(e.ctrlKey&&key==90))return true;if((e.ctrlKey&&key==118)||(e.ctrlKey&&key==86)||(e.shiftKey&&key==45))return true;if(key<48||key>57)
{if(key==45&&this.value.length==0)return true;if(key==decimal.charCodeAt(0)&&this.value.indexOf(decimal)!=-1)
{allow=false;}
if(key!=8&&key!=9&&key!=13&&key!=35&&key!=36&&key!=37&&key!=39&&key!=46)
{allow=false;}
else
{if(typeof e.charCode!="undefined")
{if(e.keyCode==e.which&&e.which!=0)
{allow=true;}
else if(e.keyCode!=0&&e.charCode==0&&e.which==0)
{allow=true;}}}
if(key==decimal.charCodeAt(0)&&this.value.indexOf(decimal)==-1)
{allow=true;}}
else
{allow=true;}
return allow;}).blur(function()
{var val=jQuery(this).val();if(val!="")
{var re=new RegExp("^\\d+$|\\d*"+decimal+"\\d+");if(!re.exec(val))
{callback.apply(this);}}});return this;}