(function($){$.fn.limitkeypress=function(options){var defaults={rexp:/^[-+]?\d*\.?\d*$/};var options=$.extend(defaults,options);return this.each(function(){var regExpression=options.rexp;$(this).blur(function(){sanitize(this);});$(this).keypress(function(e){if(e.which=="0"||e.which=="8"||e.which=="13"||e.ctrlKey||e.altKey){return;}
sanitizeWithSelection(this);var pressedChar=String.fromCharCode(e.which),updatedInput=this.value.substring(0,getSelectionStart(this))+pressedChar+this.value.substring(getSelectionEnd(this),this.value.length);if(!regExpression.test(updatedInput)){e.preventDefault();return;}
return;});function sanitizeWithSelection(o){var startCaretPos=getSelectionStart(o),endCaretPos=getSelectionEnd(o),temp="",testPlusChar="",selectionCharInfo=[];for(i=0;i<o.value.length;i++){if(startCaretPos>i){selectionCharInfo[i]='beforeSelection';}else if((startCaretPos<=i)&&(endCaretPos>i)){selectionCharInfo[i]='inSelection';}}
for(i=0;i<o.value.length;i++){var iPlusOne=i+1;testPlusChar+=o.value.substring(i,iPlusOne);if((!regExpression.test(testPlusChar))){var lastChar=testPlusChar.length-1;temp=testPlusChar.substring(0,lastChar);testPlusChar=temp;if(selectionCharInfo[i]=='beforeSelection'){startCaretPos=startCaretPos-1;endCaretPos=endCaretPos-1;}else if(selectionCharInfo[i]=='inSelection'){endCaretPos=endCaretPos-1;}}}
o.value=testPlusChar;setSelectionRange(o,startCaretPos,endCaretPos);}
function sanitize(o){var temp="",testPlusChar="";for(i=0;i<o.value.length;i++){var iPlusOne=i+1;testPlusChar+=o.value.substring(i,iPlusOne);if((!regExpression.test(testPlusChar))){var lastChar=testPlusChar.length-1;temp=testPlusChar.substring(0,lastChar);testPlusChar=temp;}}
o.value=testPlusChar;}
function getSelectionStart(o){if(o.createTextRange){var r=document.selection.createRange().duplicate()
r.moveEnd('character',o.value.length)
if(r.text=='')return o.value.length
return o.value.lastIndexOf(r.text)}else return o.selectionStart}
function getSelectionEnd(o){if(o.createTextRange){var r=document.selection.createRange().duplicate()
r.moveStart('character',-o.value.length)
return r.text.length}else return o.selectionEnd}
function setSelectionRange(input,selectionStart,selectionEnd){if(input.setSelectionRange){input.focus();input.setSelectionRange(selectionStart,selectionEnd);}
else if(input.createTextRange){var range=input.createTextRange();range.collapse(true);range.moveEnd('character',selectionEnd);range.moveStart('character',selectionStart);range.select();}}});};})(jQuery);