function dynamicSelect(id1,id2){var agt=navigator.userAgent.toLowerCase();var is_ie=((agt.indexOf("msie")!=-1)&&(agt.indexOf("opera")==-1));var is_mac=(agt.indexOf("mac")!=-1);if(!(is_ie&&is_mac)&&document.getElementById&&document.getElementsByTagName){var sel1=document.getElementById(id1);var sel2=document.getElementById(id2);if(!sel2) return; var clone=sel2.cloneNode(true);var clonedOptions=clone.getElementsByTagName("option");if(!sel2) return; refreshDynamicSelectOptions(sel1,sel2,clonedOptions);sel1.onchange=function(){refreshDynamicSelectOptions(sel1,sel2,clonedOptions)}}}function refreshDynamicSelectOptions(sel1,sel2,clonedOptions){while(sel2.options.length){sel2.remove(0)}var pattern1=/( |^)(select)( |$)/;var pattern2=new RegExp("( |^)("+sel1.options[sel1.selectedIndex].value+")( |$)");for(var i=0;i<clonedOptions.length;i++){if(clonedOptions[i].className.match(pattern1)||clonedOptions[i].className.match(pattern2)){sel2.appendChild(clonedOptions[i].cloneNode(true))}}};