function checkdigit( obj )
{
	var str="";
	for( var i=0; i<obj.value.length; i++ )
	{
		if( 	obj.value.substring( i, i+1 )=='0' ||
			obj.value.substring( i, i+1 )=='1' ||
			obj.value.substring( i, i+1 )=='2' ||
			obj.value.substring( i, i+1 )=='3' ||
			obj.value.substring( i, i+1 )=='4' ||
			obj.value.substring( i, i+1 )=='5' ||
			obj.value.substring( i, i+1 )=='6' ||
			obj.value.substring( i, i+1 )=='7' ||
			obj.value.substring( i, i+1 )=='8' ||
			obj.value.substring( i, i+1 )=='9' )
		{
			str=str+obj.value.substring( i,i+1 );
		}
	}
	obj.value=str;
};

function checkfloatdigit( obj )
{
	var str="";
	for( var i=0; i<obj.value.length; i++ )
	{
		if( obj.value.substring( i, i+1 )=='0' ||
			obj.value.substring( i, i+1 )=='1' ||
			obj.value.substring( i, i+1 )=='2' ||
			obj.value.substring( i, i+1 )=='3' ||
			obj.value.substring( i, i+1 )=='4' ||
			obj.value.substring( i, i+1 )=='5' ||
			obj.value.substring( i, i+1 )=='6' ||
			obj.value.substring( i, i+1 )=='7' ||
			obj.value.substring( i, i+1 )=='8' ||
			obj.value.substring( i, i+1 )=='9' ||
			obj.value.substring( i, i+1 )=='.' )
		{
			str=str+obj.value.substring( i,i+1 );
		}
		if( obj.value.substring( i, i+1 )==',' )
		{
			str=str+'.';
		}
	}
	obj.value=str;
};

function mostraMenu(menuCorrente)
{
	if (document.getElementById) {
		questoMenu = document.getElementById(menuCorrente).style
		if (questoMenu.display == "block") {
			questoMenu.display = "none"
		}
		else {
			questoMenu.display = "block"
		}
		return false
	}
	else {
		return true
	}
};


function startmenu()
{
	document.getElementById('menu1').style.display = "none";
};

function menufunc(menuId)
{
	if(document.getElementById(menuId).style.display == "none")
	{
		startmenu();
		document.getElementById(menuId).style.display = "block";
	}
	else
	{
		startmenu();
	}
};

/*function apri(cosa,w,h) {
	window.open (cosa,null, "height="+250+",width="+300+",status=no,toolbar=no,menubar=no,scrollbars=no,location=no,resizable=no")
};*/