function fn(obj1, obj2) {
var L1 = obj1.offsetLeft;
var R1 = obj1.offsetLeft + obj1.offsetWidth;
var T1 = obj1.offsetTop;
var B1 = obj1.offsetTop + obj1.offsetHeight;
var L2 = obj2.offsetLeft;
var R2 = obj2.offsetLeft + obj2.offsetWidth;
var T2 = obj2.offsetTop;
var B2 = obj2.offsetTop + obj2.offsetHeight;
if (L1 > R2 || R1 < L2 || T1 > B2 || B1 < T2) {
return false;
} else {
return true;
}
}