function compareItems()
{var checkedNumber=0;var checkedItems="";var formsNames=document.forms_names.form_name;for(var i=0;i<formsNames.length;i++){var formName=formsNames[i].value;if(document.forms[formName].compare.checked){checkedNumber++;if(checkedNumber>1){checkedItems+=",";}
checkedItems+=document.forms[formName].compare.value;}}
if(checkedNumber<2){alert(compareMinAllowed);}else if(checkedNumber>5){alert(compareMaxAllowed);}else{document.compare_form.items.value=checkedItems;document.compare_form.submit();}
return false;}
function compareRecentItems(formName)
{var checkedNumber=0;var checkedItems="";var recentForm=document.forms[formName];var compareItems=recentForm.compare;for(var i=0;i<compareItems.length;i++){if(recentForm.compare[i].checked){checkedNumber++;if(checkedNumber>1){checkedItems+=",";}
checkedItems+=recentForm.compare[i].value;}}
if(checkedNumber<2){alert(compareMinAllowed);}else if(checkedNumber>5){alert(compareMaxAllowed);}else{recentForm.items.value=checkedItems;recentForm.submit();}
return false;}