using 2 gateway

I am having two cable router having private ip 192.168.1.1 and 192.168.1.10 in my network. Both the router has external IP as well as internal private Ip. I have DHCP server assigning dynamic Ip to the users connected on LAN. By default user are accessing internet through 192.168.1.1 but the problem is sometimes the net connection from my ISP on router 192.168.1.1 goes down, so in that case the LAN users are unable to acess the internet. Is there any provision in windows or DHCP where if my one router is down the user can acess the internet from my other router i.e in this case 192.168.1.10 without me giivng static IP and gateway on users machines.