function selectcmp(o){
		j=0;
		for (i=0;i<document.form1.ccheckbox.length;i++){
			if (document.form1.ccheckbox[i].checked){j++}
		}
	 if (j>=4) {o.checked = false;alert('You just can choose less than 3 tours to compare!');}
	}
	
	function gocmp()
	{
		var vv = "";
		var j = 0;
		for (i=0;i<document.form1.ccheckbox.length;i++){
			if (document.form1.ccheckbox[i].checked){
				j++;
				vv += document.form1.ccheckbox[i].value+",";
			}
		}
		if(j<2) {alert('You must choose more than 2 tours to compare!');return;}
		location.href='tour-comparison.asp?delete_name='+vv;
		//alert(vv);
	}