function isInteger(s)  { 
						   var i;
						       for (i = 0; i < s.length; i++)  {   
						        var c = s.charAt(i);
						        if (((c <"0") || (c >"9"))) return false;
						    }
					    return true;
						}

function open_image(url, product_code){
	var file= "http://www.reklamni.bg/mhm_image.php?img=" + url;
	if(product_code!="") file = file+"&product_code="+ product_code;
	var screen_width=window.screen.width;
	var screen_height=window.screen.height;
	menuWindow=window.open(file,'mhm','left=30,top=0,location=no,menubar=no,toolbar=no,resizable=no,scrollbars=yes');
}
function open_product_info(product_code){
	var file= "product_info.php?product_code="+ product_code;
	var screen_width=window.screen.width;
	var screen_height=window.screen.height;
	menuWindow=window.open(file,'colmic_image','left=30,top=0,width=550,height=300,location=no,menubar=no,toolbar=no,resizable=no,scrollbars=yes');
}
function extra(num){
	var file= "colmic_text.php?num=" + num;
	var screen_width=window.screen.width;
	var screen_height=window.screen.height;
	menuWindow=window.open(file,'colmic_image','left=30,top=0,location=no,menubar=no,toolbar=no,resizable=yes,scrollbars=yes');
}
function check_quantity(formid){
if(document.formid.quantity.value==""){
	alert("error");
	return false;
	}
	return false;
}