var checkflag = "false";

function checkall(field)
{
	var jishu=0;
	if (checkflag == "false")
	{
		for (i = 0; i < field.length; i++)
		{
			if (field.elements[i].type=="checkbox")
			{
				field[i].checked = true;
				jishu=jishu+1;
			}
			else
			{
				field[i].checked = false;
			}
		}
			checkflag = "true";
			document.getElementById("delcheckbox").checked=false;
			document.getElementById("jishu").innerHTML=jishu-2;
	}
	else
	{
		for (i = 0; i < field.length; i++)
		{
			if (field.elements[i].type=="checkbox")
			{
				field[i].checked = false;
			}
			
		}
		checkflag = "false";
		document.getElementById("jishu").innerHTML=0;
	}
}
function checkdel(field)
{
	for (i = 0; i < field.length; i++)
	{
		if (field.elements[i].type=="checkbox")
		{
			field[i].checked = false;
		}
	}
	document.getElementById("jishu").innerHTML=0;
}
function jishu(field)
{
	var jishu=0;
	for (i = 0; i < field.length; i++)
	{
		if (field.elements[i].type=="checkbox" && field[i].checked==true)
		{
			if(field.elements[i].name=="allcheckbox")
			{
				document.formcheckbox[i].checked = false;
			}else{
				jishu=jishu+1;
			}
		}
	}
	document.getElementById("jishu").innerHTML=jishu;
}
function jishudel(checkboxvalue)
{
	var jishu=document.getElementById("jishu").innerHTML;
	for (i = 0; i < document.formcheckbox.length; i++)
	{
		if (document.formcheckbox.elements[i].type=="checkbox" && document.formcheckbox[i].checked==true)
		{
			if(document.formcheckbox.elements[i].value==checkboxvalue)
			{
				jishu=jishu-1;
				document.formcheckbox[i].checked = false;
			}
		}
	}
	document.getElementById("jishu").innerHTML=jishu;
}

function jishudel1(pricevalue,checkboxvalue)
{
	var price1=document.getElementById("price1").innerHTML;
	var price=document.getElementById("price").value;
	if(pricevalue=="")
	{
		pricevalue=0;
	}
	for (i = 0; i < document.formcheckbox.length; i++)
	{
		if (document.formcheckbox.elements[i].type=="checkbox" && document.formcheckbox[i].checked==true)
		{
			if(document.formcheckbox.elements[i].value==checkboxvalue)
			{
				jishu=jishu-1;
				document.formcheckbox[i].checked = false;
				price1=price1-pricevalue;
			}
		}
	}
	document.getElementById("price1").innerHTML=price1;
	document.getElementById("price").value=price1;
}

function checkvalue(pricevalue,checkboxvalue)
{
	var price1=parseInt(document.getElementById("price1").innerHTML);
	var price=parseInt(document.getElementById("price").value);
	if(pricevalue=="")
	{
		pricevalue=0;
	}
	for (i = 0; i < document.formcheckbox.length; i++)
	{
		if (document.formcheckbox.elements[i].type=="checkbox" && document.formcheckbox[i].checked==true)
		{
			if(document.formcheckbox.elements[i].value==checkboxvalue)
			{
				price1=price1+pricevalue;
			}
		}else if(document.formcheckbox.elements[i].type=="checkbox" && document.formcheckbox[i].checked==false){
			if(document.formcheckbox.elements[i].value==checkboxvalue)
			{
				price1=price1-pricevalue;
			}
		}
	}
	document.getElementById("price1").innerHTML=price1;
	document.getElementById("price").value=price1;
}