CAIRO  - Hundreds of supporters of President Mohamed Mursi protested on Sunday outside Egypt’s top court, forcing judges to delay the potential scrapping of an Islamist panel that drafted a disputed constitution.The Supreme Constitutional Court then declared it was beginning an open-ended strike in what it called a ‘black day’ for the judiciary and opposition protesters announced they will rally outside the presidential palace on Tuesday to protest against a December 15 referendum on Egypt’s controversial draft constitution.Protesters, many wrapped in blankets and carrying posters of Mursi, spent the night outside the courthouse and blocked off a main road that runs along the Nile leading up to it, trying to stop the judges from entering.“The will of the people is stronger than the will of a few judges,” said demonstrator Ismail Ahmed, 39, referring to the judiciary where many judges remain from the era of Hosni Mubarak, who was ousted by a popular uprising last year.The judges responded by calling an “administrative delay” to Sunday’s session, prompting the protesters to head home from the courthouse, an AFP reporter said. The court said later it would “suspend work for an indefinite period... and until there is no more psychological and material pressure,” while expressing “utmost sorrow and pain” over the “moral assassination” of its judges.An interior ministry official denied it was impossible for judges to enter the courthouse, saying some judiciary officials had in fact gone in thanks to government security forces guarding the entrances to ensure their safety.The court had been due to rule on the legality of the constituent assembly, which drafted a new constitution that Mursi announced on Saturday would go to a popular referendum on December 15.The new charter has become the focal point of Egypt’s biggest political crisis since Mursi was elected in June, squaring Islamist forces against secular-leaning opponents. Any ruling by the court would have escalated the crisis with Mursi, defying his presidential decree barring any judicial body from dissolving the assembly, which adopted the draft constitution amid a boycott by liberals and Christians.The November 22 decree sparked the current crisis, with the constitution, which had been due for more deliberation, being rushed through days later amid popular unrest.The disputed charter — has been criticised for paving the way to a strict interpretation of Islamic law and failing to secure key rights — prompted mass rival rallies by Mursi opponents and Islamists. Hundreds of thousands of protesters gathered on Saturday in support of Mursi, his sweeping powers and the disputed constitution, a day after crowds thronged to Cairo’s Tahrir Square to denounce his “dictatorial” decree.“One nation, two peoples,” read the front page of Al-Shuruq newspaper, while Al-Masri al-Youm ran with “Egypt at the mouth of a volcano”. Opposition protesters announced they will rally outside the presidential palace on Tuesday to protest against December 15 referendum.The rally was dubbed “the final warning,” in a joint statement from youth groups which have been organising protests, the official news agency MENA reported. Demonstrators will also protest against new sweeping powers gained by President Mohamed Mursi in a November 22 decree which sparked Egypt’s worst political crisis since his election in June. A rushed-through draft constitution adopted by an Islamist-dominated panel boycotted by liberals and Christians amid popular unrest will go to a vote on December 15, Mursi announced late on Saturday.The joint statement was signed off by various opposition parties which have been holding a sit-in in Tahrir Square, the iconic symbol of the uprising that toppled Hosni Mubarak last year. The political standoff has squared largely secular opponents of Mursi against his Islamist supporters, who have held rival rallies in Cairo.