function show_hide_form(id){
	help_var=document.getElementById('write_form_'+id).style.display;
	if(help_var=='none') document.getElementById('write_form_'+id).style.display="block";
	if(help_var=='block') document.getElementById('write_form_'+id).style.display="none";	

	help_var=document.getElementById('write_form_link'+id).style.display;	
	if(help_var=='none') document.getElementById('write_form_link'+id).style.display="block";
	if(help_var=='block') document.getElementById('write_form_link'+id).style.display="none";	
}

function GetSelectedItem_period() {
		chosen = ""
		len = document.form_ps.period.length
		
		for (i = 0; i <len; i++) {
		if (document.form_ps.period[i].checked) {
		chosen = document.form_ps.period[i].value		
		}
		}
		
		if (chosen == "defined_period") {
			value=40;
			document.getElementById("date_period_select").style.opacity = value/100;
			document.getElementById("date_period_select").style.MozOpacity = value/100;	
			document.getElementById("date_period_select").style.filter  = "alpha(opacity=" + value + ")";		
			
			value=100;
			document.getElementById("date_period_defined").style.opacity = value/100;
			document.getElementById("date_period_defined").style.MozOpacity = value/100;	
			document.getElementById("date_period_defined").style.filter  = "alpha(opacity=" + value + ")";					
		}		
		
		if (chosen == "select_period") {
			value=100;
			document.getElementById("date_period_select").style.opacity = value/100;
			document.getElementById("date_period_select").style.MozOpacity = value/100;	
			document.getElementById("date_period_select").style.filter  = "alpha(opacity=" + value + ")";		
			
			value=40;
			document.getElementById("date_period_defined").style.opacity = value/100;
			document.getElementById("date_period_defined").style.MozOpacity = value/100;	
			document.getElementById("date_period_defined").style.filter  = "alpha(opacity=" + value + ")";						}
		
}

function deli_addr() {
		chosen = ""
		len = document.cart_form.da_eq_ba.length
		
		for (i = 0; i <len; i++) {
		if (document.cart_form.da_eq_ba[i].checked) {
		chosen = document.cart_form.da_eq_ba[i].value		
		}
		}
		
		if (chosen == "1") {
			document.getElementById("deli_addr").style.display = "none";
		}
		
		if (chosen == "0") {
			document.getElementById("deli_addr").style.display = "block";
		}
		
}