function calc(lonum)
	{
	prix=eval('document.Form1.' + lonum + '_p');
	quantite=eval('document.Form1.' + lonum + '_q');
	total=Math.floor((prix.value*quantite.value)*100+0.50000000001);
	total2=total%100;
	if(total2<10){total2.toString();total2='0' + total2;}else{total2.toString();}
	total=Math.floor(total/100).toString();
	total=total + ',' + total2;
	if(total=='0,00' || total=='NaN,NaN'){total='';eval('document.Form1.' + lonum + '_q.value=\'\'');}	
  eval('document.Form1.' + lonum + '_x.value=\''+ total+'\'');
	total3=0;
	for (i=2; i<(document.Form1.length-8); i+=3)
		{
		if(document.Form1[i].value!='')
			{
			total3+=document.Form1[i-2].value * document.Form1[i-1].value;
			}
		}
	total4=Math.floor((total3)*100+0.50000000001);
	total5=total4%100;
	if(total5<10){total5.toString();total5='0' + total5;}else{total5.toString();}
	total4=Math.floor(total4/100).toString();
	total4=total4 + ',' + total5;
	if(total4=='0,00' || total4=='NaN,NaN'){total4='';}
	document.Form1.x_total.value=total4;
	}
	
	function LTrim(str) 
		{
            var whitespace = new String(" "); 
            var s = new String(str); 
            if (whitespace.indexOf(s.charAt(0)) != -1) 
			{
            	var j=0, i = s.length; 
				while (j < i && whitespace.indexOf(s.charAt(j)) != -1)
	        		j++; 
             		s = s.substring(j, i);
         	}
			return s;
 		};

	function RTrim(str) 
		{
            var whitespace = new String(" ");   
            var s = new String(str); 
            if (whitespace.indexOf(s.charAt(s.length-1)) != -1)
			{
	        	var i = s.length - 1;
            	while (i >= 0 && whitespace.indexOf(s.charAt(i)) != -1)
            		i--; 
	            	s = s.substring(0, i+1);
             }
             return s;
		};

	function Trim(str) 
		{
        	return RTrim(LTrim(str));      
		};

	function _TestIsDate1(obj)
	    {
		var object_value=obj.value;
	    //Returns true if value is a eurodate format or is NULL
	    //otherwise returns false	
	
	    if (object_value.length == 0)
	        return true;
	
	    //Returns true if value is a date in the dd/mm/yyyy format
		isplit = object_value.indexOf('/');
	
		if (isplit == -1)
		{
			isplit = object_value.indexOf('.');
		}
	
		if (isplit == -1 || isplit == object_value.length)
			return false;
	
	    sDay = object_value.substring(0, isplit);
	
		monthSplit = isplit + 1;
	
		isplit = object_value.indexOf('/', monthSplit);
	
		if (isplit == -1)
		{
			isplit = object_value.indexOf('.', monthSplit);
		}
	
		if (isplit == -1 ||  (isplit + 1 )  == object_value.length)
			return false;
	
	    sMonth = object_value.substring((sDay.length + 1), isplit);
	
		sYear = object_value.substring(isplit + 1);
	
		if (!checkinteger(sMonth)) //check month
			return false;
		else
		if (!checkrange(sMonth, 1, 12)) // check month
			return false;
		else
		if (!checkinteger(sYear)) //check year
			return false;
		else
		if (!checkrange(sYear, 0, null)) //check year
			return false;
		else
		if (!checkinteger(sDay)) //check day
			return false;
		else
		if (!checkday(sYear, sMonth, sDay)) //check day
			return false;
		else
			return true;
	    }
	
	function checkday(checkYear, checkMonth, checkDay)
	    {
	
		maxDay = 31;
	
		if (checkMonth == 4 || checkMonth == 6 ||
				checkMonth == 9 || checkMonth == 11)
			maxDay = 30;
		else
		if (checkMonth == 2)
		{
			if (checkYear % 4 > 0)
				maxDay =28;
			else
			if (checkYear % 100 == 0 && checkYear % 400 > 0)
				maxDay = 28;
			else
				maxDay = 29;
		}
	
		return checkrange(checkDay, 1, maxDay); //check day
	    }
	
	function checkinteger(object_value)
	    {
	    //Returns true if value is a number or is NULL
	    //otherwise returns false	
	
	    if (object_value.length == 0)
	        return true;
	
	    //Returns true if value is an integer defined as
	    //   having an optional leading + or -.
	    //   otherwise containing only the characters 0-9.
		var decimal_format = ".";
		var check_char;
	
	    //The first character can be + -  blank or a digit.
		check_char = object_value.indexOf(decimal_format)
	    //Was it a decimal?
	    if (check_char < 1)
		return checknumber(object_value);
	    else
		return false;
	    }
	
	function numberrange(object_value, min_value, max_value)
	    {
	    // check minimum
	    if (min_value != null)
		{
	        if (object_value < min_value)
			return false;
		}
	
	    // check maximum
	    if (max_value != null)
		{
		if (object_value > max_value)
			return false;
		}
		
	    //All tests passed, so...
	    return true;
	    }
	
	function checknumber(object_value)
	    {
	    //Returns true if value is a number or is NULL
	    //otherwise returns false	
	
	    if (object_value.length == 0)
	        return true;
	
	    //Returns true if value is a number defined as
	    //   having an optional leading + or -.
	    //   having at most 1 decimal point.
	    //   otherwise containing only the characters 0-9.
		var start_format = " .+-0123456789";
		var number_format = " .0123456789";
		var check_char;
		var decimal = false;
		var trailing_blank = false;
		var digits = false;
	
	    //The first character can be + - .  blank or a digit.
		check_char = start_format.indexOf(object_value.charAt(0))
	    //Was it a decimal?
		if (check_char == 1)
		    decimal = true;
		else if (check_char < 1)
			return false;
	        
		//Remaining characters can be only . or a digit, but only one decimal.
		for (var i = 1; i < object_value.length; i++)
		{
			check_char = number_format.indexOf(object_value.charAt(i))
			if (check_char < 0)
				return false;
			else if (check_char == 1)
			{
				if (decimal)		// Second decimal.
					return false;
				else
					decimal = true;
			}
			else if (check_char == 0)
			{
				if (decimal || digits)	
					trailing_blank = true;
	        // ignore leading blanks
	
			}
		        else if (trailing_blank)
				return false;
			else
				digits = true;
		}	
	    //All tests passed, so...
	    return true
	    }
	
	function checkrange(object_value, min_value, max_value)
	    {
	    //if value is in range then return true else return false
	
	    if (object_value.length == 0)
	        return true;
	
	
	    if (!checknumber(object_value))
		{
		return false;
		}
	    else
		{
		return (numberrange((eval(object_value)), min_value, max_value));
		}
		
	    //All tests passed, so...
	    return true;
	    }
	
	function check_email(object_value)
	{
	var s = object_value;
	var ok = 1;
	if ((s.length < 7)){
		ok = 0;
	}
	var at = s.indexOf('@');
	if (at < 1){
		ok = 0;
	}
	if (at != s.lastIndexOf('@')){
		ok = 0;
	}
	if ((s.lastIndexOf('.') < (at+2)) || (s.lastIndexOf('.') > (s.length-3)) || (s.lastIndexOf('.') < (s.length-6))){
		ok = 0;
	}
	if ((s.indexOf(',') != -1) || 	
		(s.indexOf(' ') != -1) || 
		(s.indexOf(';') != -1) ||
		(s.indexOf('\\') != -1) ||
		(s.indexOf(':') != -1) ||
		(s.indexOf('?') != -1) || 
		(s.indexOf('	') != -1) || 
		(s.indexOf('"') != -1) || 
		(s.indexOf("'") != -1) || 
		(s.indexOf('[') != -1) || 
		(s.indexOf(']') != -1) ||
		(s.indexOf('`') != -1) ||
		(s.indexOf('!') != -1) ||
		(s.indexOf('#') != -1) ||
		(s.indexOf('$') != -1) ||
		(s.indexOf('%') != -1) ||
		(s.indexOf('^') != -1) ||
		(s.indexOf('&') != -1) ||
		(s.indexOf('*') != -1) ||
		(s.indexOf('(') != -1) ||
		(s.indexOf(')') != -1) ||
		(s.indexOf('=') != -1) ||
		(s.indexOf('+') != -1) ||
		(s.indexOf('}') != -1) ||
		(s.indexOf('{') != -1) ||
		(s.indexOf('|') != -1) ||
		(s.indexOf('<') != -1) ||
		(s.indexOf('>') != -1)  )
	
		{
		ok = 0;
	}
	
	if (ok == 1){
	return true;}
	else
	{
	return false;}
}