/*
	Negative / 3 decimal places 
			onblur="extractNumber(this,3,true);" 
			onkeyup="extractNumber(this,3,true);" 
			onkeypress="return blockNonNumbers(this, event, true, true);"
	No negative / 2 decimal places 
			onblur="extractNumber(this,2,false);" 
			onkeyup="extractNumber(this,2,false);" 
			onkeypress="return blockNonNumbers(this, event, true, false);" 
	Negative / No decimal places	
			onblur="extractNumber(this,0,true);" 
			onkeyup="extractNumber(this,0,true);" 
			onkeypress="return blockNonNumbers(this, event, false, true);" 
	No negative / No decimal places
			onblur="extractNumber(this,0,false);" 
			onkeyup="extractNumber(this,0,false);" 
			onkeypress="return blockNonNumbers(this, event, false, false);" 
	No negative / Unlimited decimal places 
			onblur="extractNumber(this,-1,false);" 
			onkeyup="extractNumber(this,-1,false);" 
			onkeypress="return blockNonNumbers(this, event, true, false);" 
*/


function extractNumber(obj, decimalPlaces, allowNegative)
{
	var temp = obj.value;
	
	// avoid changing things if already formatted correctly
	var reg0Str = '[0-9]*';
	if (decimalPlaces > 0) {
		reg0Str += '\\.?[0-9]{0,' + decimalPlaces + '}';
	} else if (decimalPlaces < 0) {
		reg0Str += '\\.?[0-9]*';
	}
	reg0Str = allowNegative ? '^-?' + reg0Str : '^' + reg0Str;
	reg0Str = reg0Str + '$';
	var reg0 = new RegExp(reg0Str);
	if (reg0.test(temp)) return true;

	// first replace all non numbers
	var reg1Str = '[^0-9' + (decimalPlaces != 0 ? '.' : '') + (allowNegative ? '-' : '') + ']';
	var reg1 = new RegExp(reg1Str, 'g');
	temp = temp.replace(reg1, '');

	if (allowNegative) {
		// replace extra negative
		var hasNegative = temp.length > 0 && temp.charAt(0) == '-';
		var reg2 = /-/g;
		temp = temp.replace(reg2, '');
		if (hasNegative) temp = '-' + temp;
	}
	
	if (decimalPlaces != 0) {
		var reg3 = /\./g;
		var reg3Array = reg3.exec(temp);
		if (reg3Array != null) {
			// keep only first occurrence of .
			//  and the number of places specified by decimalPlaces or the entire string if decimalPlaces < 0
			var reg3Right = temp.substring(reg3Array.index + reg3Array[0].length);
			reg3Right = reg3Right.replace(reg3, '');
			reg3Right = decimalPlaces > 0 ? reg3Right.substring(0, decimalPlaces) : reg3Right;
			temp = temp.substring(0,reg3Array.index) + '.' + reg3Right;
		}
	}
	
	obj.value = temp;
}
function blockNonNumbers(obj, e, allowDecimal, allowNegative)
{
	var key;
	var isCtrl = false;
	var keychar;
	var reg;
		
	if(window.event) {
		key = e.keyCode;
		isCtrl = window.event.ctrlKey
	}
	else if(e.which) {
		key = e.which;
		isCtrl = e.ctrlKey;
	}
	
	if (isNaN(key)) return true;
	
	keychar = String.fromCharCode(key);
	
	// check for backspace or delete, or if Ctrl was pressed
	if (key == 8 || isCtrl)
	{
		return true;
	}

	reg = /\d/;
	var isFirstN = allowNegative ? keychar == '-' && obj.value.indexOf('-') == -1 : false;
	var isFirstD = allowDecimal ? keychar == '.' && obj.value.indexOf('.') == -1 : false;
	
	return isFirstN || isFirstD || reg.test(keychar);
}


function popupWindow(mylink, windowname)
{
	//alert(mylink);
if (! window.focus)return true;
var href;
if (typeof(mylink) == 'string')
   href=mylink;
else
href=mylink.href;
win3=window.open(href,windowname, 'width=600,height=550,scrollbars=yes');

 if(win3)
    var popUpsBlocked = false
 else
    var popUpsBlocked = true
	
if(popUpsBlocked)
  alert('We have detected that you are using popup blocking software.\n Please allow popups for UIswap.com in order to use Chat Application');
  

win3.moveTo(screen.width/2-300,screen.height/2-250)
}


//  chat close
function closepopup(extension)
{
	//if(false == win3.closed)
	//{
	//	win3.close();
	//}	
	window.location="logout."+extension;
}




function RetunBasePath()
{
	return "http://www.uiswap.com";	
}